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A dynamic homogenization method for elastic wave band gap and initial-boundary value problem analysis of piezoelectric composites with elastic and viscoelastic periodic layers J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-23 Mengyuan Gao, Zhelong He, Jie Liu, Chaofeng Lü, Guannan Wang
In this paper, we present a dynamic homogenization model for elastic wave propagation analysis in piezoelectric composites with periodic electroelastic and viscoelectroelastic layers. The model is developed using a multiscale homogenization method based on an asymptotic expansion of displacement and electric potential up to the 8th order. By employing the formulation structure of gradient elasticity
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A unified morphomechanics theory framework for both Euclidean and non-Euclidean curved crease origami J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-22 Yinzheng Yu, Ruoman Zhu, Kai Wei, Xujing Yang
Conventional curved crease origami exhibits only Euclidean metrics at the crease, where the surfaces on either side should consistently display convexity on one side and concavity on the other, unfavorably leading to restricted morphologies. Herein, we focus on a special type of origami: non-Euclidean curved crease origami. Additionally, we establish a morphomechanics framework that facilitates the
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Indentation on a constrained electroactive gel J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-21 Guozhan Xia
Electroactive gel (EAG), a smart material with tunable physical properties, has attracted increasingly more attention in various engineering fields. This paper presents the analytical solutions for the frictionless contact between a rigid spherical indenter and a block of constrained swollen EAG, which is also subject to a transverse electric field. The classical JKR model is extended to involve the
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A discrete–continuous model of coupled plasticity and fracture J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-21 Zhangtao Li, Zhuo Zhuang, Zhijie Li, Tao Wang, Zhanli Liu, Yinan Cui
Understanding the interplay between plasticity and fracture is the basis for the prediction and design of materials and structures, which is controlled by the concurrent dynamics of discrete dislocations and cracks. However, till now, how to directly capture the co-evolution of a three-dimensional (3D) discrete dislocation network and arbitrary crack remains challenging due to their intrinsic complex
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Approximating arbitrary traction–separation-laws by means of phase-field theory — Mathematical foundation and numerical implementation J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-20 H. Lammen, S. Conti, J. Mosler
Cohesive zone models are powerful for capturing non-linear material failure. In contrast to classic bulk material models, they are based on so-called traction–separation-laws – relations connecting the stress vector acting at an interface (e.g., at the crack) to its energetically dual variable being the displacement jump (e.g., opening of the crack). A major drawback of cohesive zone models is that
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Snap-through instability-driven enhancement of magnetoelectric coupling in soft electrets J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-19 Kai Tan, Lingling Chen, Shengyou Yang, Qian Deng
Conventional magnetoelectric (ME) systems often suffer from the reduced conversion efficiency at low frequencies due to the low power input and relatively small ME coupling coefficient, constraining their applications in magnetic sensing and energy harvesting. In this work, we present a novel approach of utilizing the snap-through instability of soft ME materials to enhance their electric responses
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3D phase-field cohesive fracture: Unifying energy, driving force, and stress criteria for crack nucleation and propagation direction J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-17 Ye Feng, Lu Hai
This paper presents a 3D variational phase-field cohesive fracture model that incorporates crack direction information into the energy functional. Through an analytical homogenization procedure, the crack normal is obtained in closed form based on the principle of energy minimization. We find that, within the proposed model, several widely recognized crack direction criteria—including the minimum potential
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Hydromechanical field theory of plant morphogenesis J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-15 Hadrien Oliveri, Ibrahim Cheddadi
The growth of plants is a hydromechanical phenomenon in which cells enlarge by absorbing water, while their walls expand and remodel under turgor-induced tension. In multicellular tissues, where cells are mechanically interconnected, morphogenesis results from the combined effect of local cell growths, which reflects the action of heterogeneous mechanical, physical, and chemical fields, each exerting
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The impacts of thermoelastic anisotropy and grain boundary misorientation on microcracking in ceramics J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-14 Andrew R. Ericks, Frank W. Zok, Daniel S. Gianola, Matthew R. Begley
This paper examines the role of thermoelastic anisotropy on grain boundary cracking in brittle materials using a highly efficient computational framework. Energy release rates (ERRs) are computed for 35 materials spanning all seven crystal systems. Two crack geometries are considered: short interface cracks in isolated bicrystal plates, and cracked grain boundaries in polycrystal plates comprising
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Mechanobiological modeling of viscoelasticity in soft tissue growth and morphogenesis J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-13 Zhongya Lin, Weizhi Huang, Shuang Li, Mingfeng Wang, Jinshuai Bai, Xindong Chen, Xi-Qiao Feng
Most soft biological tissues feature distinct mechanical properties of viscoelasticity, which play a significant role in their growth, development, and morphogenesis. In this paper, we propose a mechanobiological viscoelastic model in the framework of thermodynamics. The multiscale mechanisms underlying the viscoelasticity of tissues are clarified, such as extracellular matrix composition and organization
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Fire-induced damage behaviour in corrosion-damaged concrete: Thermal-mechanical coupling phase field meso-scale modeling J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-13 Kunting Miao, Zichao Pan, Xurui Fang, Airong Chen
The mechanical performance degradation of concrete in marine environments is often caused by multi-hazard, such as long-term environmental loads and short-term extreme loads, which also lead to more complex damage pattern. This study presents a thermal-mechanical coupling phase field meso‑scale model to simulate the damage evolution process of concrete subjected to rebar corrosion and fire hazards
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Modelling of stress-state-dependent ductile damage with gradient-enhancement exemplified for clinch joining J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-13 Johannes Friedlein, Julia Mergheim, Paul Steinmann
A coupled finite plasticity ductile damage and failure model is proposed for the finite element simulation of clinch joining, which incorporates stress-state dependency and regularisation by gradient-enhancement of the damage variable. Ductile damage is determined based on a failure indicator governed by a failure surface in stress space. The latter is exemplary chosen as a combination of the Hosford–Coulomb
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Strain-rate-dependent plastic deformation and Ductile-to-Brittle transition in epithelial tissues J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-12 Qigan Gao, Yixia Chen, Lingjie Yang, Hongyuan Jiang
As epithelial tissues are ubiquitous and naturally exposed to mechanical strains at various rates in normal functioning, it is crucial to understand their rate-dependent mechanical response and fracture failure behaviors. In this study, we utilize the modified cell vertex model, which allows for cell–cell detachment transition (T4 transition), to perform uniaxial tensile tests on cell monolayers and
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Corrugated sheets with loading-position-dependent bistability J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-11 Yang Liu, Zhiqiang Meng, Yifan Wang, Chang Qing Chen
Structures capable of multiple stable configurations are increasingly attractive for applications in shape-morphing and adaptive systems. Among these, corrugated sheets are promising due to their ability to achieve different loading-position-dependent stable morphologies. In this work, the bistability of corrugated sheets is systematically investigated, where point loads at different positions can
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A tensegrity-inspired inertial amplification metastructure with tunable dynamic characteristics J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-11 Ao Li, Zhuo-Ming Bai, Xu Yin, Tao Zhu, Zi-Yan Sun, Jiang Yang, Li-Yuan Zhang
Inertial amplification metastructure, known for its negative effective stiffness, exhibits excellent low-frequency vibration isolation, rendering it widely applicable in mechanical filters and elastic waveguides. However, research into their tunable dynamic characteristics, such as bandgaps, remains scarce. In this paper, we propose an inertial amplification metastructure with tunable dynamic characteristics
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Continuum modeling and dynamics of earthworm-like peristaltic locomotion J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-11 Rui Shi, Hongbin Fang, Jian Xu
In this study, we present a continuous dynamics model for peristaltic rectilinear locomotion that accounts for three-dimensional deformation, inertia, friction, nonlinear constitutive profile, and strain waves. Using tensile tests and contact force measurements from earthworms, we derived the constitutive and anisotropic Coulomb's dry friction models. The developed dynamic model uniquely incorporates
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Stress relaxation and viscous energy in nonlinear viscoelasticity: A rational extended thermodynamics framework J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-11 Marco Amabili, Takashi Arima, Tommaso Ruggeri
We investigate uniaxial stress relaxation under constant strain using a recent hyperbolic model of nonlinear viscoelasticity based on the principles of Rational Extended Thermodynamics, as proposed in Ruggeri (2024). We determine the viscous dissipated energy such that the stress decays over time as a combination of exponential functions (Prony Series) with different relaxation times. We show that
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Tuning the buckling sequences of metamaterials using plasticity J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-10 Wenfeng Liu, Bernard Ennis, Corentin Coulais
Material nonlinearities such as hyperelasticity, viscoelasticity, and plasticity have recently emerged as design paradigms for metamaterials based on buckling. These metamaterials exhibit properties such as shape morphing, transition waves, and sequential deformation. In particular, plasticity has been used in the design of sequential metamaterials which combine high stiffness, strength, and dissipation
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A modified semi-soft model of liquid crystal elastomers: Application to elastic and viscoelastic responses J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-09 Yu Zhou, Chen Wei, Lihua Jin
Liquid crystal elastomers (LCEs) are emerging actuating materials composed of polymer networks and liquid crystal mesogens. A plateau in the stress-strain curve of LCEs, typical of the semi-soft characteristics, is commonly observed. Although the classical semi-soft model based on compositional fluctuations intends to capture this feature, it does not accurately predict the stress plateau. Moreover
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Topology generation and quantitative stiffness analysis for fiber networks based on disordered spatial truss J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-08 Shaoxiong Huang, Yafeng Wang, Xian Xu, Yaozhi Luo
Fiber networks are essential functional materials, yet existing mechanical models only capture specific aspects of their mechanical properties. This paper proposes a general mechanical model for fiber networks based on pin-jointed bar assemblies. The topology and stress modes of the networks are generated through topology optimization. The model decouples and quantifies the contributions of entropy
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Gradient-enhanced ductile fracture constitutive modeling in implicit two-scale finite element analysis J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-08 Tianwen Tan, Ikumu Watanabe
In the field of damage modeling for ductile materials, numerous models have successfully addressed various fracture responses, as well as the need for robust algorithms and solutions to computational challenges. This study developed a damage model based on continuum damage mechanics. It addresses mesh regularization, a primary computational issue in macroscopic structural fracture analysis through
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Enhancement of adhesion strength through microvibrations: Modeling and experiments J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-07 Michele Tricarico, Michele Ciavarella, Antonio Papangelo
High-frequency micrometrical vibrations have been shown to greatly influence the adhesive performance of soft interfaces, however a detailed comparison between theoretical predictions and experimental results is still missing. Here, the problem of a rigid spherical indenter, hung on a soft spring, that is unloaded from an adhesive viscoelastic vibrating substrate is considered. The experimental tests
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A Nonlinear Thermo-Visco-Green-Elastic Constitutive Model for Mullins Damage of Shape Memory Polymers under Giant Elongations J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-06 Alireza Ostadrahimi, Alireza Enferadi, Mostafa Baghani, Siavash Sarrafan, Guoqiang Li
In this paper, we introduce a comprehensive 3D finite-deformation constitutive model for shape memory polymers focused on addressing the Mullins effect when subjected to substantial elongation, reaching up to 200 % strain. Considering only four Maxwell branches with nonlinear viscous components integrated with the WLF equation, our modeling framework inherently ensures thermodynamic consistency without
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Rapid detachment of a rigid sphere adhered to a viscoelastic substrate: An upper bound model incorporating Maugis parameter and preload effects J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-06 Qingao Wang, Antonio Papangelo, Michele Ciavarella, Huajian Gao, Qunyang Li
For a typical adhesive contact problem, a rigid sphere initially adhered to a relaxed viscoelastic substrate is pulled away from the substrate at finite speeds, and the pull-off force is often found to depend on the rate of pulling. Despite significant theoretical advancements in this area, how the apparent adhesion enhancement is affected by the Maugis parameter and preload remains unclear, and existing
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Subsurface microstructure effects on surface resolved slip activity J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-03 Jonathan M. Hestroffer, Jean-Charles Stinville, Marie-Agathe Charpagne, Matthew P. Miller, Tresa M. Pollock, Irene J. Beyerlein
We investigate the influence of subsurface microstructure on the micromechanical and slip activity fields at the free surface on a polycrystalline Ni-based superalloy under deformation. The approach combines full-field crystal plasticity finite element simulations, high resolution three-dimensional electron back-scattered diffraction TriBeam technology, and high-fidelity mirroring of the microstructure
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Deciphering necking in granular materials: Micromechanical insights into sand behavior during cycles of triaxial compression and extension J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-02 Junhe Cui, Konstantinos Karapiperis, Øyvind Torgersrud, Edward Andò, Gioacchino Viggiani, Jose Andrade
This study elucidates the fundamental governing mechanisms behind necking instability in granular materials, a phenomenon extensively documented in the literature yet lacking a clear explanation of its underlying causes. Our findings suggest that the phenomenon of tensile necking instability can be understood through the framework of anisotropic critical state theory, considering both local porosity
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Multimaterial topology optimization of elastoplastic composite structures J. Mech. Phys. Solids (IF 5.0) Pub Date : 2025-01-01 Yingqi Jia, Weichen Li, Xiaojia Shelly Zhang
Plasticity is indispensable for wide-ranging structures as a protection mechanism against extreme loads. Tailoring elastoplastic behaviors such as stiffness, yield force, and energy dissipation to optimal states is therefore crucial for safety and economics. Recent studies have optimized either geometry or material phase for desired energy dissipating capacities; however, integrating both in design
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Re-interpretation of the Weibull strength distribution of polycrystalline ceramics – characteristic strength and fracture toughness J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-27 Xiaozhi Hu, Yiu-Wing Mai
A Weibull strength distribution pertinent to micro-grain structures can be measured for a polycrystalline ceramic after the influence of micro-cracks is sufficiently suppressed (or nearly all pre-existing processing defects are smaller than or much smaller than the average grain size). We outlined the conditions for measurements of this “intrinsic” micro-grain Weibull strength distribution, and showed
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Coupled large deformation phase-field and cohesive zone model for crack propagation in hard-soft multi-materials J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-26 Aimane Najmeddine, Shashank Gupta, Reza Moini
This work presents a unified large deformation constitutive framework that couples the phase-field approach for bulk fracture with the potential-based Park–Paulino–Roesler cohesive zone model (PPR CZM) to study crack propagation in multi-material systems that contain interfaces. The phase-field component captures crack initiation and propagation within bulk constituents, whereas the PPR CZM captures
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Multiscale analysis method for profiled composite structures considering the forming process J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-25 Chen Liu, Jingran Ge, Shuwei Zhao, Qi Zhang, Xiaodong Liu, Jun Liang
The forming process often results in a highly heterogeneous mesoscale structure within composite structures, leading to enormous changes in mechanical properties. This complexity poses a significant challenge for accurately evaluating their mechanical behavior. In this paper, a concurrent multiscale analysis method considering the forming process is proposed to accurately analyze the mechanical behavior
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Consistent machine learning for topology optimization with microstructure-dependent neural network material models J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-24 Harikrishnan Vijayakumaran, Jonathan B. Russ, Glaucio H. Paulino, Miguel A. Bessa
Additive manufacturing methods together with topology optimization have enabled the creation of multiscale structures with controlled spatially-varying material microstructure. However, topology optimization or inverse design of such structures in the presence of nonlinearities remains a challenge due to the expense of computational homogenization methods and the complexity of differentiably parameterizing
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Wavelength selection in the twist buckling of pre-strained elastic ribbons J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-24 Arun Kumar, Basile Audoly
A competition between short- and long-wavelength twist buckling instabilities has been reported in experiments on thin elastic ribbons having pre-strain concentrated in a rectangular region surrounding the axis. The wavelength of the twisting mode has been reported to either scale (i) as the width of the ribbon when the pre-strain is large (short-wavelength case) or (ii) as the length of the ribbon
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A length-scale insensitive cohesive phase-field interface model: Application to concurrent bulk and interface fracture simulation in Lithium-ion battery materials J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-21 Wan-Xin Chen, Xiang-Long Peng, Jian-Ying Wu, Orkun Furat, Volker Schmidt, Bai-Xiang Xu
A new cohesive phase-field (CPF) interface fracture model is proposed in this paper. It employs an exponential function for the interpolation of fracture energy between the bulk phase and the interface, and its effective interface fracture energy is solved based on the Euler–Lagrange equation of the phase-field theory and the consistency to the cohesive zone model (CZM) in the sharp interface concept
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Macroscopically modeling fatigue life of additively manufactured metals: Pore-defect informed phase-field model J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-20 Wei Tang, Lingfeng Wang, Shen Sun, Liucheng Zhou, Min Yi
Fatigue crack growth (FCG) behavior and fatigue life of additively manufactured (AM) materials are highly sensitive to AM-induced pore defects, thus challenging the traditional fatigue models. A model customized for predicting fatigue/fracture behavior of AM materials is indispensable. Here we propose a pore-defect informed phase-field model (PFM) for the macroscopic modeling of fatigue crack initiation
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Interfacial fracture in soft solids — How geometry and viscoplasticity make crack fronts unstable J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-17 Pierre-Yves Corbel, Paul Fourton, Paul Elzière, Keyvan Piroird, Matteo Ciccotti, Etienne Barthel
Polyvinylbutyral (PVB) is a polymer with sizeable viscoelastic dissipation at room temperature. It is often used in laminated glass to impart shock resistance to glazings. We have investigated adhesion rupture in glass/PVB interfaces in the through crack tensile test (TCT) geometry, representative of laminated glass rupture. We find that even though, in the high velocity range, interfacial rupture
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Grain refinement in metal microparticles subjected to high impact velocities J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-17 Chongxi Yuan, Marisol Koslowski
High-strain rate deformation caused by microparticles impacting at high velocities is used to refine the microstructure of metallic materials to the nanocrystalline regime. Under these conditions, metallic targets and particles show a gradient distribution of nanograins, with size increasing away from the impact surface. Some of the mechanisms responsible for the refinement process are still not fully
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Optimization of constitutive law for objective numerical modeling of knitted fabric J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-16 Agnieszka Tomaszewska, Daniil Reznikov
This paper discusses the problem of macroscopic modeling a knitted technical fabric with the aim to determine a constitutive law for adequately modeling the material response under real-life load. As phenomenological, hyperelastic material laws reveal different parameters due to different test modalities used to identify such parameters, an optimization scheme is proposed to determine an objective
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Mechanistic cohesive zone laws for fatigue cracks: Nonlinear field projection and in situ synchrotron X-ray diffraction (S-XRD) measurements J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-16 H. Tran, D. Xie, P.K. Liaw, H.B. Chew, Y.F. Gao
A weak interface model with a predefined traction-separation relationship (denoted as the cohesive zone law), when embedded in a bulk solid, is oftentimes adopted to simulate the crack advancement and thus determine the crack resistance under either monotonic or cyclic loading conditions. To-date, various types of loading-unloading irreversibility and hysteresis are only presumed in the cohesive zone
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Quantifying 3D time-resolved kinematics and kinetics during rapid granular compaction, Part II: Dynamics of heterogeneous pore collapse J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-16 Sohanjit Ghosh, Mohmad M. Thakur, Ryan C. Hurley
Pores in granular materials may occupy significant material volume. Pore-scale dynamics, therefore, strongly influence the macroscopic response of these materials when they are subjected to rapid compaction. In Part I of this series, Ghosh et al. (2024) employed in-situ X-ray imaging coupled with mesoscale finite element modeling to reconstruct the 3D time-resolved kinematics and kinetics of aluminum
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Enhanced cyclic stability of NiTi shape memory alloy elastocaloric materials with Ni4Ti3 nanoprecipitates: Experiment and phase field modeling J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-14 Bo Xu, Xu Xiao, Qixing Zhang, Chao Yu, Di Song, Qianhua Kan, Chong Wang, Qingyuan Wang, Guozheng Kang
In this work, a NiTi shape memory alloy (SMA) with excellent elastocaloric performance (with an ultrahigh coefficient of performance, i.e., COPmat of ∼46.5 and an adiabatic temperature change of ∼10.5 K) and good cyclic stability is prepared. A thermo-mechanically coupled and crystal-plasticity-based phase field model including both the descriptions of Ni4Ti3 precipitation and martensitic transformation
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Unified model for adhesive contact between solid surfaces at micro/nano-scale J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-14 Yudong Zhu, Yong Ni, Chenguang Huang, Jilin Yu, Haimin Yao, Zhijun Zheng
Because of the huge specific surface area at the micro/nano scale, inter-surface adhesion and surface effects play a critical role in the behavior of solid-to-solid contact. The inter-surface adhesion originates from the intermolecular traction between two surfaces, while the surface effects, including residual surface stress and surface elasticity, result from the physical discrepancy between the
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A continuum geometric approach for inverse design of origami structures J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-14 Alon Sardas, Michael Moshe, Cy Maor
Miura-Ori, a celebrated origami pattern that facilitates functionality in matter, has found multiple applications in the field of mechanical metamaterials. Modifications of Miura-Ori pattern can produce curved configurations during folding, thereby enhancing its potential functionalities. Thus, a key challenge in designing generalized Miura-Ori structures is to tailor their folding patterns to achieve
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Characterizing dissipated energy density distribution and damage zone in double network hydrogels J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-12 Jiapeng You, Chong Wang, Zhixuan Li, Zishun Liu
The double network hydrogels (DN gels) process high fracture toughness due to their considerable energy dissipation during fracture. To effectively interpret the energy dissipation, it is imperative to conduct a study on the quantitative characterization of the dissipated energy density distribution and the damage zone around the crack tip. In this study, we propose a series of tearing tests on pre-stretched
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A tube-based constitutive model of brain tissue with inner pressure J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-10 Wei Liu, Zefeng Yu, Khalil I. Elkhodary, Hanlin Xiao, Shan Tang, Tianfu Guo, Xu Guo
Many blood vessels exist in brain tissue. Their internal blood pressure plays a crucial role in physiological disorders, such as brain edema, stroke, or traumatic brain injury (concussion). Homogenized continuum mechanics-based brain tissue models can provide an attractive approach to rapidly simulate blood-pressure related physiological disorders, and traumatic brain injury. These homogenized models
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A continuum model for novel electromechanical-instability-free dielectric elastomers J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-07 Rui Xiao, Zike Chen, Ye Shi, Lin Zhan, Shaoxing Qu, Paul Steinmann
Traditional dielectric elastomers exhibit an unstable response when the electric field reaches a certain threshold, known as electro-mechanical instability, which significantly limits the broad application of these soft active materials. Recently, a bimodal-networked dielectric elastomer has been designed without suffering from the electro-mechanical instability due to a clear strain stiffening effect
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Topological state switches in hard-magnetic meta-structures J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-07 Quan Zhang, Stephan Rudykh
We propose a metamaterial design principle that enables the remote switching of topological states. Dynamic breaking of space-inversion symmetry is achieved through the intricate design of magnetic spring structures within the metamaterial building blocks, whose stiffness can be remotely altered using an external magnetic field. We develop a mathematical model to predict the magnetic field-induced
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A constitutive model for amorphous solids considering intrinsic entangling of shear and dilatation, with application to studying shear-banding J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-06 W. Rao, Y. Chen, L.H. Dai, M.Q. Jiang
In amorphous solids, shear transformations, as elementary rearrangement events operating in local regions, are intrinsically entangled with dilatation deformation, which results in the physical process of the shear band being complex. To capture such entanglement, we propose a finite-deformation continuum framework for amorphous solids by incorporating nonequilibrium thermodynamics. Within this framework
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Biomimetic Turing machine: A multiscale theoretical framework for the inverse design of target space curves J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-06 JiaHao Li, Xiaohao Sun, ZeZhou He, YuanZhen Hou, HengAn Wu, YinBo Zhu
Morphing ribbons and their inverse design are usually confined to plane curves, since in most cases only the curvature is considered. Given that curvature and torsion are equally important geometric characteristics of space curves, it is urgent to propose a systematic theoretical framework for the inverse design. Toward this end, we here present a multiscale theoretical framework named biomimetic Turing
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A constitutive model of monodomain liquid crystal elastomers with the thermal-mechanical-nematic order coupling J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-05 Weida Kang, Qian Cheng, Changyue Liu, Zhijian Wang, Dongfeng Li, Xudong Liang
Liquid crystal elastomers (LCEs) are a distinctive class of materials that combine the transformative properties of liquid crystals with the flexibility of elastomers, enabling significant reversible deformations in response to various external stimuli. This paper investigates the intricate thermal-mechanical-nematic order coupling behaviors of monodomain nematic LCEs. We propose an enhanced constitutive
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Phase field fracture in elastoplastic solids: a stress-state, strain-rate, and orientation dependent model in explicit dynamics and its applications to additively manufactured metals J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-03 Cunyi Li, Jian Liu, Le Dong, Chi Wu, Grant Steven, Qing Li, Jianguang Fang
Phase field models have gained increasing popularity in analysing fracture behaviour of materials. However, few studies have been explored to simulate dynamic ductile fracture to date. This study aims to develop a phase field framework that considers strain rate, stress state, and orientation dependent ductile fracture under dynamic loading. Firstly, the governing equations of displacement and phase
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A hyperelastic constitutive model for soft elastomers considering the entanglement-dependent finite extensibility J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-03 Jinglei Yang, Kaijuan Chen, Chao Yu, Kun Zhou, Guozheng Kang
In this paper, a novel hyperelastic constitutive model for soft elastomers is developed based on the concept of the tortuous tube. This model incorporates the finite extensibility of the polymer chain, the entanglement contribution to elasticity and the non-affine micro-to-macro scale transition in a unified way. To reflect the entanglement effect and its influence on the deformation of soft elastomers
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A visco-hyperelastic constitutive model of hydrogel considering the coupling effect between segment motion and interchain slippage J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-02 Xinyu Liu, Qingsheng Yang, Xia Liu, Ran Tao, Wei Rao
Segment motion induces interchain slippage, leading to a complex coupling between hyperelastic and viscoelastic behaviors in hydrogels. Traditional models, which treat these behaviors separately and introduce a coupling free energy, struggle to capture this visco-hyperelastic coupling mechanism accurately. In this work, we develop a visco-hyperelastic constitutive model incorporating viscoelastic contributions
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Rupture mechanics of blood clot fibrin fibers: A coarse-grained model study J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-02 Beikang Gu, Jixin Hou, Nicholas Filla, He Li, Xianqiao Wang
Thrombosis, when occurring undesirably, disrupts normal blood flow and poses significant medical challenges. As the skeleton of blood clots, fibrin fibers play a vital role in the formation and fragmentation of blood clots. Thus, studying the deformation and fracture characteristics of fibrin fiber networks is the key factor to solve a series of health problems caused by thrombosis. This study employs
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Fracture process zone and fracture energy of heterogeneous soft materials J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-12-02 Xiang Wu, Xiao Li, Shuo Sun, Yilin Yu, Zhengjin Wang
Bio-inspired heterogeneous soft materials are under rapid development due to their superior fracture and fatigue resistance. In the last few years, several kinds of fibrous soft composites in different length scales have been fabricated. However, the fracture behavior and toughening mechanism of this class of materials are still elusive. Here we develop a theoretical model for the crack tip field of
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Unhomogeneous yielding of porous materials — Evolution equations J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-11-29 R. Vigneshwaran, A.A. Benzerga
Equations are developed to describe the evolution of internal parameters entering the formulation of any criterion of unhomogeneous yielding. The evolution equations are applicable to arbitrarily oriented ellipsoidal voids. The parameters include the volume fraction of voids, the relative lengths and orientations of their axes, and their relative spacings. The evolution equations are determined in
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Synthesis-processing-property relationships in thermomechanics of liquid crystal elastomers J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-11-29 Zhengxuan Wei, Umme Hani Bootwala, Ruobing Bai
Liquid crystal elastomers (LCEs) are composed of rod-like liquid crystal (LC) molecules (mesogens) linked into elastomeric polymer networks. They present a nematic phase with directionally ordered mesogens at room temperature and an isotropic phase with no order at high temperatures, enabling large thermal-induced deformation. As a result, LCEs have become promising candidates for new applications
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Elastic bodies with kinematic constraints on many small regions J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-11-29 Andrea Braides, Giovanni Noselli, Simone Vincini
We study the equilibrium of hyperelastic solids subjected to kinematic constraints on many small regions, which we call perforations. Such constraints on the displacement u are given in the quite general form u(x)∈Fx, where Fx is a closed set, and thus comprise confinement conditions, unilateral constraints, controlled displacement conditions, etc., both in the bulk and on the boundary of the body
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Unifying linear proportionality between real contact area and load in rough surface contact J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-11-28 Qinghua Meng, Hengxu Song, Yunong Zhou, Xiaoming Liu, Xinghua Shi
A long-standing debate and challenge in contact mechanics is to confirm the linearity between the real contact area and load on rough surfaces as well as its proportionality. Here, we first theoretically prove the linearity between the real contact area and load on rough surfaces by considering an infinite number of surface asperities. The mechanism for such linearity is that the applied force on each
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Computational investigation into XRD peak broadening effects with discrete dislocation dynamics in additively manufactured 316L stainless steel J. Mech. Phys. Solids (IF 5.0) Pub Date : 2024-11-28 Dylan Madisetti, Markus Sudmanns, Christopher D. Stiles, Jaafar A. El-Awady
X-ray diffraction (XRD) line profile analysis is a powerful material characterization tool that has been in use for over 100 years (Etter and Dinnebier, 2014; Laue, 1901) With increases in available computing power, it is now possible to simulate X-ray diffraction experiments from atomic and meso-scale simulations. Through this work, a high-throughput framework for simulating XRD line profiles of alloyed