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Unveiling in-depth optical feedback-modulated interference dynamics driven by extracavity synergistic multi-factor coupling 认领 引用
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作者 Jie Liu Yunkun Zhao +7 位作者 Weihe Kong Jianchu Liu Shujun Zheng Haosen Li Shuang Song Daoping Wang Yuren Wang Liang Lu 《Advanced Photonics Nexus》 CSCD 2026年第4期101-111,共11页
The precise acquisition of multi-feature and multi-pose fusion information is crucial for revealing intrinsic physical interactions of laser dynamics,providing reliable intelligent decision-making in complex environme... The precise acquisition of multi-feature and multi-pose fusion information is crucial for revealing intrinsic physical interactions of laser dynamics,providing reliable intelligent decision-making in complex environments.We investigate the optical feedback-modulated interference dynamics in view of the developed laser self-mixing-based multi-parameter sensing system.It demodulates the combined extracavity moving information that is sensitive to translation and rotation with directional identification,leveraging the selfmixing speckle modulation effect and Doppler shift effect,describing the complete target’s attitude transformations.Experimentally,the optical feedback frequency-shifted technique suppresses the low-frequency noise interferences and provides a reference for rotation direction discrimination.We observe the evolution of photon behaviors under various feedback states,with the mean minimum feedback photon number of 0.691 feedback photons per Doppler cycle of 2.02μs.Experimental results demonstrate that the proposed sensor enables simultaneous vector measurements of in-plane translational linear velocity and out-of-plane rotational angle for a non-cooperative target.High signal-to-noise ratio dual-frequency domain signals with unambiguous directional recognition were acquired over a velocity and an angle range of 448.2 to 1232.6 mm∕s and 40 to 85 deg,respectively.We present a robust,common-path solution for multi-parameter fusion information detection from external moving targets,showing potential applications in autonomous navigation systems,industrial metrology,and dynamic target tracking scenarios. 展开更多
关键词 extracavity multi-factor coupling optical feedback-modulated interference dynamics vector measurement
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Numerical Study of Multi-Factor Coupling Effects on Energy Conversion Performance of Nanofluidic Reverse Electrodialysis 认领 引用
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作者 Hao Li Cunlu Zhao +4 位作者 Jinhui Zhou Jun Zhang Hui Wang Yanmei Jiao Yugang Zhao 《Frontiers in Heat and Mass Transfer》 EI CAS 2025年第2期507-528,共22页
Based on the rapid advancements in nanomaterials and nanotechnology,the Nanofluidic Reverse Electrodialysis(NRED)has attracted significant attention as an innovative and promising energy conversion strategy for extrac... Based on the rapid advancements in nanomaterials and nanotechnology,the Nanofluidic Reverse Electrodialysis(NRED)has attracted significant attention as an innovative and promising energy conversion strategy for extracting sustainable and clean energy fromthe salinity gradient energy.However,the scarcity of research investigating the intricate multi-factor coupling effects on the energy conversion performance,especially the trade-offs between ion selectivity and mass transfer in nanochannels,of NRED poses a great challenge to achieving breakthroughs in energy conversion processes.This numerical study innovatively investigates the multi-factor coupling effect of three critical operational factors,including the nanochannel configuration,the temperature field,and the concentration difference,on the energy conversion processes of NRED.In this work,a dimensionless amplitude parameter s is introduced to emulate the randomly varied wall configuration of nanochannels that inherently occur in practical applications,thereby enhancing the realism and applicability of our analysis.Numerical results reveal that the application of a temperature gradient,which is oriented in opposition to the concentration gradient,enhances the ion transportation and selectivity simultaneously,leading to an enhancement in both output power and energy conversion efficiency.Additionally,the increased fluctuation of the nanochannel wall from s=0 to s=0.08 improves ion selectivity yet raises ion transport resistance,resulting in an enhancement in output power and energy conversion efficiency but a slight reduction in current.Furthermore,with increasing the concentration ratio cH/cL from 10 to 1000,either within a fixed temperature field or at a constant dimensionless amplitude,the maximumpower consistently attains its optimal value at a concentration ratio of 100 but the cation transfer number experiences amonotonic decrease across this entire range of concentration ratios.Finally,uponmodifying the operational parameters fromthe baseline condition of s=0,cH/cL=10,andΔT=0 K to the targetedconditionof s=0.08,cH/cL=50,andΔT=25 K,there is a concerted improvement observed in the open-circuit potential,short-circuit current,andmaximumpower,with respective increments of 8.86%,204.97%,and 232.01%,but a reduction in cation transfer number with a notable decrease of 15.37%. 展开更多
关键词 Salinity gradient energy nanofluidic reverse electrodialysis energy conversion nanochannel configuration multi-factor coupling effect
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Cellular Automata-based Chloride Ion Diffusion Simulation of Concrete Bridges under Multi-factor Coupling Actions 认领 引用 被引量：3
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作者 ZHU Jinsong HE Likun 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2012年第1期160-165,共6页
In order to accurately simulate the diffusion of chloride ion in the existing concrete bridge and acquire the precise chloride ion concentration at given time, a cellular automata （CA）-based model is proposed. The p... In order to accurately simulate the diffusion of chloride ion in the existing concrete bridge and acquire the precise chloride ion concentration at given time, a cellular automata （CA）-based model is proposed. The process of chloride ion diffusion is analyzed by the CA-based method and a nonlinear solution of the Fick＇s second law is obtained. Considering the impact of various factors such as stress states, temporal and spatial variability of diffusion parameters and water-cement ratio on the process of chloride ion diffusion, the model of chloride ion diffusion under multi-factor coupling actions is presented. A chloride ion penetrating experiment reported in the literature is used to prove the effectiveness and reasonability of the present method, and a T-type beam is taken as an illustrative example to analyze the process of chloride ion diffusion in practical application. The results indicate that CA-based method can simulate the diffusion of chloride ion in the concrete structures with acceptable precision. 展开更多
关键词 concrete bridge chloride ion diffusion cellular automata multi-factor coupling actions
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Strength Optimization and Prediction of Cemented Tailings Backfill Under Multi-Factor Coupling 认领 引用
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作者 HU Yafei LI Keqing +1 位作者 HAN Bin JI Kun 《Journal of Shanghai Jiaotong university(Science)》 EI 2024年第5期845-856,共12页
In order to solve the problem of strength instability of cemented tailings backfill(CTB)under low temperature environment(≤20℃),the strength optimization and prediction of CTB under the influence of multiple factors... In order to solve the problem of strength instability of cemented tailings backfill(CTB)under low temperature environment(≤20℃),the strength optimization and prediction of CTB under the influence of multiple factors were carried out.The response surface method(RSM)was used to design the experiment to analyze the development law of backfill strength under the coupling effect of curing temperature,sand-cement ratio and slurry mass fraction,and to optimize the mix proportion;the artificial neural network algorithm(ANN)and particle swarm optimization algorithm(PSO)were used to build the prediction model of backfill strength.According to the experimental results of RSM,the optimal mix proportion under different curing temperatures was obtained.When the curing temperature is 10-15℃,the best mix proportion of sand-cement ratio is 9,and the slurry mass fraction is 71%;when the curing temperature is 15-20℃,the best mix proportion of sand-cement ratio is 8,and the slurry mass fraction is 69%.The ANN-PSO intelligent model can accurately predict the strength of CTB,its mean relative estimation error value and correlation coefficient value are only 1.95%and 0.992,and the strength of CTB under different mix proportion can be predicted quickly and accurately by using this model. 展开更多
关键词 cemented tailings backfill(CTB) response surface method(RSM) multi-factor coupling strength optimization intelligent prediction model
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Safety modeling and simulation of multi-factor coupling heavy-equipment airdrop 认领 引用 被引量：8
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作者 Zhang Jiuxing Xu Haojun +1 位作者 Zhang Dengcheng Liu Dongliang 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2014年第5期1062-1069,共8页
Heavy-equipment airdrop is a highly risky procedure that has a complicated system due to the secluded and complex nature of factors＇ coupling. As a result, it is difficult to study the modeling and safety simulation ... Heavy-equipment airdrop is a highly risky procedure that has a complicated system due to the secluded and complex nature of factors＇ coupling. As a result, it is difficult to study the modeling and safety simulation of this system. The dynamic model of the heavy-equipment airdrop is based on the Lagrange analytical mechanics, which has all the degrees of freedom and can accurately pinpoint the real-time coordinates and attitude of the carrier with its cargo. Unfavorable conditions accounted in the factors＇ models, including aircraft malfunctions and adverse environments, are established from a man-machine-environment perspective. Subsequently, a virtual simulation system for the safety research of the multi-factor coupling heavy-equipment airdrop is developed through MATLAB/Simulink, C language and Flightgear software. To verify the veracity of the theory, the verification model is built based on dynamic software ADAMS. Finally, the emulation is put to the test with the input of realistic accident variables to ascertain its feasibility and validity of this method. 展开更多
关键词 Heavy-equipment airdrop Modeling and simulation Multi-body system Multi-factor coupling Safety
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Steel Temperature Compensating Model With Multi-Factor Coupling Based on Ladle Thermal State 认领 引用 被引量：3
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作者 WU Peng-fei XU An-jun +1 位作者 TIAN Nai-yuan HE Dong-feng 《Journal of Iron and Steel Research International》 SCIE CAS CSCD 2012年第5期9-16,共8页
Combined with the parameters of the production process of a steel factory, numerical simulations for a new ladle from preheating to turnover are conducted using the finite element analysis system software （ANSYS）. T... Combined with the parameters of the production process of a steel factory, numerical simulations for a new ladle from preheating to turnover are conducted using the finite element analysis system software （ANSYS）. The measured data proved that the simulated results are reliable. The effects of preheating time, thermal cycling times, and empty package time on steel temperature are calculated, an ideal preheating time is provided, besides, based on the analysis of a single factor and use the nonlinear analysis method, a steel temperature compensating model with di- versified coupling factors is proposed, with the largest error of the present coupling model at 1. 462 ~C, and the er- rors between actual and target steel temperature in tundish after the model is applied to practical production are basi- cally controlled within -4-6 ~C, which can meet the accuracy of the manufacturer and has a practical guiding significance for the production in steelmaking workshops. 展开更多
关键词 ladle thermal state multiple-factor coupling numerical simulation compensation model
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Nonlinear coupling mechanism of quasi-zero-stiffness units in multi-level structures 认领 引用
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作者 Shaokun YANG Xingxing SHI +2 位作者 Xingzhong WANG Jiuhui WU Fuyin MA 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2026年第6期1215-1240,共26页
Multilayer structures composed of quasi-zero-stiffness(QZS)units exhibit mechanical characteristics distinct from those of a single unit,and their behaviors are governed by the coupling mechanism between the QZS units... Multilayer structures composed of quasi-zero-stiffness(QZS)units exhibit mechanical characteristics distinct from those of a single unit,and their behaviors are governed by the coupling mechanism between the QZS units.This paper introduces the coupling coefficient to quantitatively describe this mechanism,classifying the system into strongly coupled and weakly coupled states.Through theoretical analysis,numerical simulation,and experimental testing,the static and dynamic responses under different coupling states are comparatively investigated.The results show that in the strongly coupled system,the deformation behavior of each QZS unit shows high consistency,leading to a wider QZS region,weaker nonlinear characteristics,and stronger dynamic response.In the weakly coupled systems,the low degree of deformation coordinations among the units results in different QZS regions,enabling low-frequency vibration isolation under varying loads.The analytical approach of the coupling mechanisms and the static and dynamic response behaviors generated by the two coupling mechanisms provide guidance for the structural design of multifunctional and highly adaptable multi-level QZS metamaterials. 展开更多
关键词 multi-level structure coupling mechanism strong coupling weak coupling deformation coordination
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Broadband ground motion simulation and analysis of a near-fault 3D basin-mountain coupling site based on the hybrid method 认领 引用 被引量：1
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作者 Liu Zhongxian Tang Kang +2 位作者 Li Chengcheng Yuan Xiaoming Zhang Hai 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2026年第1期87-110,共24页
This study presents an effective hybrid simulation approach for simulating broadband ground motion in complex near-fault locations.The approach utilizes a deterministic approach based on the spectral element method(SE... This study presents an effective hybrid simulation approach for simulating broadband ground motion in complex near-fault locations.The approach utilizes a deterministic approach based on the spectral element method(SEM),which is used to simulate low-frequency ground motion(f1 Hz).A fourth-order Butterworth filter with zero phase shift is employed for time-domain filtering of low-and high-frequency time series at a crossover frequency of 1 Hz,merging the low and high-frequency ground motions into a broadband time series.Taking an Ms 6.8 Luding earthquake,as an example,this hybrid method was used for a rapid and efficient simulation analysis of broadband ground motion in the region.The accuracy and efficiency of this hybrid method were verified through comparisons with actually observed station data and empirical attenuation curves.Deterministic method simulation results revealed the effects of mountainous topography,basin effects,nonlinear effects within the basin’s sedimentary layers,and a coupling interaction between the basin and the mountains.The findings are consistent with similar studies,showing that near-fault sedimentary basins significantly focus and amplify strong ground motion,and the soil’s nonlinear behavior in the basin influences ground motion to varying extents at different distances from the fault.The mountainous topography impacts the basin’s response to ground motion,leading to barrier effects.This research provides a scientific foundation for seismic zoning,urban planning,and seismic design in nearfault mountain basin regions. 展开更多
关键词 hybrid ground motion simulation method spectral element method three-dimensional stochastic finite fault method near-fault basin-mountain coupling effect basin effect nonlinear effect
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Effect of Magnetic Hysteresis on Magnon-Magnon Coupling Induced by Interlayer Dzyaloshinskii-Moriya Interaction 认领 引用
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作者 Jihao Xia Yuqiang Wang +8 位作者 Guibin Lan Jiyang Ou Weizhou Wu Jiafeng Feng Caihua Wan Guanxiang Du Syed Rizwan Xiufeng Han Guoqiang Yu 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第1期231-247,共17页
Based on the Smit-Suhl formula,we propose a universal approach for solving the magnon-magnon coupling problem in bilayer coupled systems(e.g.,antiferromagnets).This method requires only the energy expression,enabling ... Based on the Smit-Suhl formula,we propose a universal approach for solving the magnon-magnon coupling problem in bilayer coupled systems(e.g.,antiferromagnets).This method requires only the energy expression,enabling the automatic derivation of analytical expressions for the eigenmatrix elements via symbolic computation,eliminating the need for tedious manual calculations.Using this approach,we investigate the impact of magnetic hysteresis on magnon-magnon coupling in a system with interlayer Dzyaloshinskii-Moriya interaction(DMI).The magnetic hysteresis leads to an asymmetric magnetic field dependence of the resonance frequency and alters the number of degeneracy points between the pure optical and acoustic modes.Moreover,it can result in the coupling strength at the gap of the f–H phase diagram being nearly vanishing,contrary to the conventionally expected maximum.These results deepen the understanding of the effect of interlayer DMI on magnon–magnon coupling and the proposed universal method significantly streamlines the solving process of magnon–magnon coupling problems. 展开更多
关键词 universal approach magnon magnon coupling symbolic computationeliminating magnetic hysteresis bilayer coupled systems egantiferromagnets energy expressionenabling derivation analytical expressions interlayer Dzyaloshinskii Moriya interaction
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Probing strong electron-phonon coupling in semimetallic PtSe2via ultrafast optical spectroscopy 认领 引用
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作者 LIU Shu-yu WU Qi-yi +6 位作者 ZHANG Chen LI Xin LONG Quan CHANG Hao-lin WANG Ying-wei HE Jun MENG Jian-qiao 《Journal of Central South University》 SCIE EI CAS CSCD 2026年第6期2511-2520,共10页
Platinum diselenide(PtSe2)exhibits a distinctive thickness-modulated semiconductor-to-semimetal transition,which makes it suitable for diverse applications in nanoelectronics and optoelectronics.This study systemat... Platinum diselenide(PtSe2)exhibits a distinctive thickness-modulated semiconductor-to-semimetal transition,which makes it suitable for diverse applications in nanoelectronics and optoelectronics.This study systematically investigates the spatiotemporal dynamics of photoexcited carrier relaxation in PtSe2.Through temperature-dependent ultrafast spectroscopy,two distinct low-frequency acoustic phonons(AP)were identified in multilayer PtSe2.Transient absorption microscopy(TAM)measurements reveal thickness-dependent relaxation dynamics and distinct carrier diffusion behavior in multilayer PtSe2.These findings indicate superior carrier transport properties,with a measured mobility of(394.1±38.5)cm2/(V·s)for multilayers.Temperature-dependent ultrafast dynamics,acquired using a custom-built cryogenic pump-probe system,reveal two coherent AP modes with central frequencies ofω1=1.27 THz andω2=0.17 THz,respectively.The higher frequencyω1mode corresponds to the shear mode with a nominal electron-phonon coupling constantλω1=2.22.This study,based on low-temperature ultrafast spectroscopy,elucidates the low-frequency acoustic phonon mode and strong electron-phonon coupling effect in the semimetal PtSe2.These findings lay the foundation for a deeper understanding of the semimetallic properties of PtSe2and for the design of ultrafast photonic devices. 展开更多
关键词 PtSe2 thickness-modulated electron-phonon coupling ultrafast optical low-temperature
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Centrifuge modeling study on near-ground explosions and the coupling of ground shock energy in sandy foundation 认领 引用
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作者 Longhua Guan Zheng Pang +3 位作者 Qiang Lu Yang Ding Yubing Wang Yunmin Chen 《Defence Technology（防务技术）》 SCIE EI CAS CSCD 2026年第7期93-109,共17页
Blast effects and energy transfer in near-ground explosions differ significantly from underground scenarios,particularly in terms of ground shock propagation and energy coupling mechanisms across various geological co... Blast effects and energy transfer in near-ground explosions differ significantly from underground scenarios,particularly in terms of ground shock propagation and energy coupling mechanisms across various geological conditions.This study employs centrifuge modeling to simulate near-ground explosions in sandy soil,including surface explosions and airbursts.The focus was on blast-induced cratering,ground shock effects,and energy coupling in sandy foundations.Scaling laws for crater dimensions and ground shock parameters were established and validated based on experimental results.The"modeling of models"series showed good consistency in crater measurements,leading to an empirical formula for estimating crater radius in dry sand.For surface explosions,soil acceleration responses showed single peaks in the central zone(horizontal standoff distance<0.6 m/(kg)1/3)and dual peaks in the near-surface zone(0.79-1.2 m/(kg)1/3)due to combined effects of direct and airburst-induced ground shock.Empirical methods were developed to predict peak acceleration distributions in sandy foundations.Utilizing crater measurements and ground shock propagation laws,a computational approach for evaluating energy transmission in soil foundations was proposed.The study also developed prediction curves for ground shock energy coupling coefficients with scaled blast depth/height,providing a unified model for both underground and near-ground explosions in sandy foundations.The research findings can enhance the methodologies for simulating blast effects and offer a scientific basis for optimizing weapon effectiveness and protective engineering design. 展开更多
关键词 Centrifuge model tests Near-ground explosions Explosion-induced cratering Ground shock Energy coupling
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Three-dimensional full-scale neutronics/thermal-hydraulics/mechanics coupling analysis-based structural assessment of helium-cooled ceramic breeder blanket for fusion reactor 认领 引用
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作者 Qiang Lian Kui Zhang +6 位作者 Shan-Shan Bu Liang-Ming Pan Wen-Xi Tian Sui-Zheng Qiu Guang-Hui Su Xing-Hua Wu Xiao-Yu Wang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第6期178-195,共18页
To accelerate the development and utilization of fusion energy,the China Fusion Engineering Test Reactor(CFETR)has been proposed as a bridge between the International Thermonuclear Experimental Reactor and demonstrati... To accelerate the development and utilization of fusion energy,the China Fusion Engineering Test Reactor(CFETR)has been proposed as a bridge between the International Thermonuclear Experimental Reactor and demonstration fusion reactors.The primary objective of the CFETR is to achieve fusion energy transformation and tritium self-sufficiency,which is realized through the function of the blanket.In this study,a neutronicshermal-hydraulics/mechanics coupling method is developed and applied to a helium-cooled ceramic breeder(HCCB)blanket,which is one of the two blanket candidates for the CFETR.A three-dimensional full-scale model is utilized in the coupling analysis to obtain the distributions of the neutronic,thermal-hydraulic,and mechanical parameters.A structural assessment of the CFETR HCCB blanket is then conducted considering steady-state conditions and two transient scenarios.The results demonstrate that following optimization of the blanket structure,the maximum temperatures of the different components remain below the safety limit of the corresponding materials.The structural assessment indicates that the blanket maintains its structural integrity under steady-state conditions.However,immediately after an in-box loss-of-coolant accident,structural failure owing to stress concentration may occur.Additionally,in the early stage of a loss-of-flow accident,the stress at the joint point between the cooling plate and cap exceeds the allowable stress of the material,potentially leading to structural failure within 17 s if no protective response is implemented.These findings provide comprehensive insights into the performance and safety of the CFETR HCCB blanket design. 展开更多
关键词 Structural assessment Fusion blanket Three-dimensional full-scale model Coupling analysis CFETR
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Fatigue of Recycled Concrete Aggregate Asphalt Mixture under Temperature-Humidity Coupling 认领 引用
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作者 CHEN Hao ZHENG Wenhua +5 位作者 JI Jie DONG Zhilei YU Yening WANG Zihao CHEN Meng ZHOU Wenjuan 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2026年第2期523-536,共14页
A comprehensive full-sieve-hole grading correction method was used to adjust aggregate gradings.The fatigue properties of recycled concrete aggregate(RCA)asphalt mixtures were investigated using an improved indirect t... A comprehensive full-sieve-hole grading correction method was used to adjust aggregate gradings.The fatigue properties of recycled concrete aggregate(RCA)asphalt mixtures were investigated using an improved indirect tensile fatigue test under temperature-humidity coupling based on 20-year meteorological data of Beijing,and the degeneration mechanism was further explored by scanning electron microscopy and energy-dispersive spectroscopy.The experimental results indicate that replacing 5-20 mm coarse limestone aggregate(LA)with RCA at a 50% substitution volume can mitigate the impact of RCA variations on the asphalt mixture proportioning design.All RCA asphalt mixtures have lower initial fatigue properties than the LA asphalt mixture.However,under temperature-humidity coupling,the long-term fatigue property of an RCA asphalt mixture with a low proportion of recycled brick exceeds that of the LA asphalt mixture,and the fatigue life decline rate of the RCA asphalt mixture during 10-year service decreases by approximately 25%.This is due to the penetration of the asphalt mortar into the RCA through the pores and cracks on the RCA surface.It forms an interfacial transition zone composed of asphalt mortar and cement mortar and further reduces the mixture damage caused by the water and freeze-thaw conditions. 展开更多
关键词 recycled concrete aggregate asphalt mixture temperature-humidity coupling fatigue property micromechanism
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Variable-angle shear-compression instability in coal:Mechanistic insights and precursor identificationunder hydrochemicalmechanical coupling 认领 引用
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作者 Xiaojun Feng Weitao Yue +2 位作者 Zhiwei Cao Shuaishuai Zhou Enyuan Wang 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第6期4435-4456,共22页
In deep coal mining,mine water containing acidic ions(Cl⁻,SO₄²⁻)often results in the saturation of coal over extended periods,causing physicochemical damage and compromising structural stability.The objective of ... In deep coal mining,mine water containing acidic ions(Cl⁻,SO₄²⁻)often results in the saturation of coal over extended periods,causing physicochemical damage and compromising structural stability.The objective of this study is to elucidate the instability mechanisms of coal subjected to compression-shear fracture in coupled hydrochemical-mechanical environments.Through uniaxial staged loading tests with variable shear angles(α=30°-70°),acoustic emission(AE)monitoring,scanning electron microscopy(SEM)characterization,and discrete element method(DEM),a systematical investigation was conducted to explore the damage evolution of coal saturated in neutral(pH=7)/weakly acidic(pH=5.5)conditions.The results indicate that both shear angles(α)and water chemistry significantly affect the damage evolution of coal.As the shear angle increases,the failure mode shifts from axial splitting to shear dominance,and the b-value decreases from 2.1 to 1.4.Weakly acidic conditions markedly accelerate the damage process,altering the energy release mode from gradual accumulation to sudden,concentrated release.Moment tensor analysis reveals that tensile sources are dominant at low α(45%).At the microscale,coal weakness is primarily induced by the selective dissolution of kaolinite,the formation of interfacial microcracks,and the loss of cementing material under acidic conditions.Based on the critical slowing down(CSD)theory,a precursory warning method focused on variance(S²)and the autocorrelation coefficient(φ)is proposed.These findings provide a theoretical basis for the risk assessment of dynamic disasters in mining and stratified prevention strategies for coal seams with different inclinations. 展开更多
关键词 Dynamic disaster Hydrochemical-mechanical coupling Variable-angle compression-shear Instability mechanism Precursor warning
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Controlling mechanism and quantitative characterization of thermalhydraulic coupling properties of moraine soil containing frozen inclusions 认领 引用
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作者 ZHU Wenyu LI Changdong +3 位作者 TAN Jie ZHOU Jiaqing WANG Xueying Ehsan PEGAH 《Journal of Mountain Science》 SCIE CSCD 2026年第5期2323-2346,I0050-I0062,共24页
The thermal-hydraulic coupling processes in moraine soils containing frozen inclusions are prevalent in cold alpine regions(for example,the Tibetan Plateau)and closely linked to various mountainous geological hazards.... The thermal-hydraulic coupling processes in moraine soils containing frozen inclusions are prevalent in cold alpine regions(for example,the Tibetan Plateau)and closely linked to various mountainous geological hazards.Despite extensive research,characterizing this coupling process remains challenging.This study investigates the evolution of the thermal-hydraulic properties of moraine soils containing frozen inclusions under warm water flow,considering key parameters and phase change.Parameter values were calibrated using field and laboratory data.The simulation results show the monotonic trend of outlet temperature,ice content and permeability.Thermal conductivity,soil porosity,fluid temperature,frozen inclusion content,and initial matrix permeability play predominant roles in the evolution process.Based on these findings,comprehensive models to quantitatively characterize the seepage evolution process were developed and discriminant models for two equilibrium states were established,incorporating critical factors.Furthermore,an in-depth discussion on the simulation of the phase-change process and the selection of the relative permeability range was provided.The findings enhance our understanding of thermal-hydraulic coupling processes in moraine soils and offer a valuable reference framework for future studies in this field. 展开更多
关键词 Moraine soil Thermal-hydraulic coupling Phase change Sensitivity analysis Semiempirical model
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Coordinated observations on the spatiotemporal development of global-scale dipolarizations and their coupling to meso-scale dipolarizations 认领 引用
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作者 Sheng Tian J.M.Weygand +5 位作者 J.Liu J.R.Wygant L.Lyons V.Angelopoulos J.Bortnik G.D.Reeves 《Earth and Planetary Physics》 EI CSCD 2026年第2期291-301,共11页
Global-and meso-scale dipolarizations are well-known features of Earth’s magnetosphere,but their coupling remains poorly understood.Here,using a new approach that combines two-dimentional(2D)ionospheric field-aligned... Global-and meso-scale dipolarizations are well-known features of Earth’s magnetosphere,but their coupling remains poorly understood.Here,using a new approach that combines two-dimentional(2D)ionospheric field-aligned current(FAC)maps with coordinated observations from a network of magnetospheric satellites,we directly show that individual global-scale dipolarizations can expand from the nightside to,or even into,the dayside.These expansions are enduring(20–30 minutes),slow(2–4 deg/min),and global in extent(up to 12 h in local time),consistent with previous statistical inferences but now explicitly observed.The expanding FACs form a two-sheet current system as described by the Boström II model.In contrast,meso-scale dipolarizations are bursty(a few minutes),fast(several tens deg/min),and localized(several hours in local time),as evidenced by auroral expansions and satellite data.They are associated with the line-current system as described by the Boström I model(i.e.,the substorm current wedge).Notably,meso-scale dipolarizations often emerge near the expanding edge of a global-scale dipolarization,suggesting a dynamic coupling between the two scales.These observations provide a complementary scenario to the simulation-based interpretation that global-scale dipolarizations result from the accumulation of meso-scale dipolarizations.Here,meso-scale dipolarizations appear far less frequently than in simulations and occur around the edge of global-scale dipolarizations.This result implies that meso-scale dipolarizations may be sporadically triggered during the azimuthal expansion of global-scale dipolarizations. 展开更多
关键词 dipolarization field-aligned current magnetosphere−ionosphere coupling
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Magnetoelastic coupling enhancement induced by a phonon channel in multiferroic composites 认领 引用
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作者 Chunrui Peng Junru Li +4 位作者 Haoran Niu Dongxing Zhang Qiuquan Guo Xiangwei Zhu Jun Yang 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第2期402-416,共15页
Enhancing the nonconservative force exerted on the ferromagnetic material is a key strategy for improving magnetoelastic coupling in multiferroic composites.Inspired by the mechanism of pulsed lasers injecting phonons... Enhancing the nonconservative force exerted on the ferromagnetic material is a key strategy for improving magnetoelastic coupling in multiferroic composites.Inspired by the mechanism of pulsed lasers injecting phonons directly into ferromagnetic materials,we propose a method to introduce and amplify phonons by constructing a“phonon channel”.Analyzing the magnon excitation spectrum reveals that magnetoelastic coupling is significantly enhanced with an increasing amplification coefficient Apof nonconservative force in the phonon channel.When the external magnetic field is parallel to the wave vector of the spin wave,the amplitude of magnons in the anti-crossing region exhibits left-right symmetry with respect to the crossing point.In contrast,when the magnetic field is perpendicular,the symmetry becomes up-down.Introducing a coupling layer into the multiferroic composites provides a viable approach to realizing the phonon channel.Taking a multiferroic composite structure consisting of polyvinylidene fluoride and yttrium iron garnet as an example,we compare the electrical and acoustic properties of multiferroic composites with and without a coupling layer in the microwave frequency band.The enhancement of electrical and acoustic properties confirms the effectiveness of the phonon channel in multiferroic composites. 展开更多
关键词 Magnetoelastic coupling Nonconservative force Piezomagnetic effect Acoustic impedance Multiferroic composites
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Effect of silane coupling agents on interfacial features and joint performance of ultrasonically welded AA6061 aluminum alloy to carbon fiber reinforced PA6 认领 引用
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作者 Haipeng ZHOU Yufan CAI +2 位作者 Yuanduo YANG Sansan AO Yang LI 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第5期574-592,共19页
The use of Silane Coupling Agent(SCA)is an important way to improve the joining quality between metal and plastic.However,how to rationally use SCAs is still lack of guidance.We investigate the effect of type of SCA,s... The use of Silane Coupling Agent(SCA)is an important way to improve the joining quality between metal and plastic.However,how to rationally use SCAs is still lack of guidance.We investigate the effect of type of SCA,soaking time of SCA,and combination of SCA on the interfacial features and joint performance of ultrasonically welded AA6061 to CF/PA6.Four SCAs(γ-chloropropyltrimethoxysilane(NQ54),γ-chloropropyltriethoxysilane(KH230),vinyltrimethoxysilane(A171),γ-aminopropyltriethyloxysilane(KH550))were selected.The results show that the optimal joint strength(30.2 MPa)is obtained when the Al sheets are soaked in KH550 for 3 min.A fully dehydrated condensation reaction occurs between the OAH of the KH550 and the OAH on the aluminum alloy surface,forming plenty of Si AOAAl bonds,which contribute to the improved wetting behavior of liquid PA6 on the aluminum alloy surface.However,the combination of SCAs leads to the consumption of functional groups,hindering the formation of Si AOAAl bonds,and therefore reducing the joint performance. 展开更多
关键词 Aluminum alloy Carbon fiber reinforced thermoplastic Coupling agent Performance Silane Ultrasonic welding
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Shear fracturing behavior and mechanism of intact granite under thermal-mechanical coupling loading 认领 引用
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作者 Fanzhen Meng Zhengyang Xu +5 位作者 Jianhua Han Qijin Cai Yuantao Wen Zaiquan Wang Yuzong Li Jingjing Lu 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第2期1429-1446,共18页
High rock temperature is a great challenge frequently encountered during subsurface resource recovery and deep underground space utilization,and it is still unclear how the granitic rock responds to realtime high temp... High rock temperature is a great challenge frequently encountered during subsurface resource recovery and deep underground space utilization,and it is still unclear how the granitic rock responds to realtime high temperature upon shear loading.To better understand the shear fracture behavior and underlying processes of intact granite exposed to thermal-mechanical coupling loading,direct shear tests were conducted utilizing a newly built testing apparatus at varied normal stresses and high temperatures.Influencesof different temperatures and different heating methods(real-time heating and thermal treatment)on the shear mechanical behavior were compared and discussed.Results indicate that shear stress fluctuationswith some small stress drops occur as shear stress is approaching the peak strength under real-time heating,accompanied by more and earlier AE signal uprushes.This suggests that greater cracking events occur earlier during real-time heating than after thermal treatment,resulting in a lower peak shear strength.Furthermore,the peak shear strength,post-peak stress drop,and cohesion rise from room temperature(RT)to 200℃(the peak strength increases by 8%,5.8%,and 9.9%under normal stress of 5 MPa,15 MPa,and 20 MPa,correspondingly),and subsequently decline from 200℃to 400℃.Temperature has a limited impact on shear stiffness from RT to 200℃,but significantlyreduces it from 200℃to 400℃,with drops of 15%,7.9%,and 10%under normal stress of 5 MPa,15 MPa,and 20 MPa,respectively.Moreover,the shear strength and stiffness under real-time heating are lower than those for the thermally treated specimens.The strengthening of intact granite below 200℃upon shear is associated with loss of water and a more compacted structure,while the weakening effect of temperature on shear strength from 200℃to 400℃is due to the new thermal cracks and less brittle and stiff of minerals. 展开更多
关键词 Thermal-mechanical coupling Direct shear test Thermal cracks Granite shear failure
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A hyperelastic constitutive model accounting for tension-shear coupling in preforming modelling of 3D woven fabrics 认领 引用
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作者 Chuang LIU Yuchen ZHU +4 位作者 Yanqi HU Hui CHENG Kaifu ZHANG Renzi BAI Biao LIANG 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第6期308-320,共13页
The accurate preforming modelling of 3D woven fabrics is essential for their forming quality control and optimization.However,their tension-shear coupling during preforming is not considered in the existing models.To ... The accurate preforming modelling of 3D woven fabrics is essential for their forming quality control and optimization.However,their tension-shear coupling during preforming is not considered in the existing models.To address this issue,an anisotropic hyperelastic constitutive model considering the tension-shear coupling was established for 3D woven fabrics.A picture frame tester was designed and manufactured to investigate tension-shear coupling effect.The results show that the fiber pre-tension can significantly enhance the shear resistance of 3D woven fabrics.The biaxial pre-tension of 1.5%can increase the in-plane shear force by up to 2.25 times compared to that in the pure in-plane shear.The identified tension-shear coupling parameters were integrated into the hyperelastic constitutive model and were implemented via user subroutine in Abaqus.The model’s effectiveness was verified by the hemispherical and fan blade forming experiments.The proposed coupled model demonstrates higher prediction accuracy than the uncoupled model in terms of shear angle and force,which provides a valuable tool for the optimization of forming process of 3D woven fabric. 展开更多
关键词 Constitutive models 3D woven fabrics Finite element method Preforming Tension-shear coupling
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