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Molecular simulation-guided and physics-informed constitutive modeling of highly stretchable hydrogels with dynamic ionic bonds J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-04-05 Hua Yang, Danming Zhong, Ping Rao, Shaoxing Qu
Adaptive polymers are being designed with dynamic molecular bonds or chain interactions to respond with external stimuli with unparalleled mechanical properties and multifunctionality. An elegant example is to substantially enhance the stretchability and toughness of hydrogels through the use of ionic bond interactions. To assist the materials design and applications, a predictive theory is in high
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Multiscale modeling of dislocation-mediated plasticity of refractory high entropy alloys J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-04-05 Feng Zhao, Wenbin Liu, Xin Yi, Yin Zhang, Huiling Duan
Refractory high entropy alloys (RHEAs) have drawn growing attention due to their remarkable strength retention at high temperatures. Understanding dislocation mobility is vital for optimizing high-temperature properties and ambient temperature ductility of RHEAs. Nevertheless, fundamental questions persist regarding the variability of dislocation motion in the rugged energy landscape and the effective
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A machine learning interatomic potential for high entropy alloys J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-04-05 Lianping Wu, Teng Li
High entropy alloys (HEAs) possess a vast compositional space, providing exciting prospects for tailoring material properties yet also presenting challenges in their rational design. Efficiently achieving a well-designed HEA often necessitates the aid of atomistic simulations, which rely on the availability of high-quality interatomic potentials. However, such potentials for most HEA systems are missing
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On the coupling of Hamilton's principle and thermodynamic extremal principles J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-30 Klaus Hackl, Jiří Svoboda, Franz Dieter Fischer
Extremal principles can generally be divided into two rather distinct classes. There are, on the one hand side, formulations based on the Lagrangian or Hamiltonian mechanics, respectively, dealing with time dependent problems, but essentially resting on conservation of energy and thus being not applicable to dissipative systems in a consistent way. On the other hand, there are formulations based essentially
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Equilibrium analysis of surface-constrained elastic rods: Unveiling contact and internal forces through local geometry J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-28 Meng Wang, Xin Yi
Confinement scenarios of thin elastic rods are prevalent in both natural and engineered systems. The accurate quantification of the mechanical interplay between confined rods and their confining surfaces remains a formidable challenge, primarily due to the intricate nonlinear nature of thin rods and their contact with surfaces. Here, we present a theoretical framework designed to characterize equilibrium
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Predicting the post-bifurcated patterns of architectured materials using group-theoretic tools J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-28 Rachel Azulay, Christelle Combescure
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Inverse design of three-dimensional multicellular biobots with target functions J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-27 Hui-Kai Zhang, Bo-Wen Xu, Zi-Yao Jia, Bo Li, Xi-Qiao Feng
Hybrid living biobots consisting of active cells hold promise for significant applications as, for example, intelligent devices in medical engineering and organisms with specific functions in synthetic biology. However, the design and creation of living biobots with various cells remain a challenge. In this paper, we propose a three-dimensional inverse optimization strategy based on the pixel topology
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Mechanistic understanding of microstructural effects on the thermal fatigue resistance of solder joints J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-27 Yilun Xu, Jingwei Xian, Richard J. Coyle, Christopher M. Gourlay, Fionn P.E. Dunne
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Cosserat-phase-field modeling of grain nucleation in plastically deformed single crystals J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-27 Flavien Ghiglione, Anna Ask, Kais Ammar, Benoît Appolaire, Samuel Forest
Thermomechanical processing of crystalline materials induces microstructural evolution such as grain nucleation and growth. In the numerical simulation of these processes, grain nucleation is generally treated as an additional step in which circular or spherical grains are added in regions where a critical dislocation density, stress or strain are reached. In this paper, systematic finite element simulations
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Investigating the ductile to brittle transition phenomenon in binary Fe-Ni systems using molecular dynamics simulation J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-27 Rakesh Kumar Barik, Tellakula Jayasree, Sankalp Biswal, Abhijit Ghosh, Debalay Chakrabarti
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A local variational principle for fracture J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-26 Christopher J. Larsen
The seminal paper of Francfort and Marigo (1998) introduced a variational formulation for Griffith fracture () that has resulted in substantial theoretical and practical progress in modeling and simulating fracture. In particular, it led to the phase-field approximation proposed in Bourdin et al. (2000), which has been widely implemented. However, the formulation in Francfort and Marigo (1998) is known
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Top-down constitutive modelling to capture nanoscale shear localization J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-23 Jici Wen, Yujie Wei
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Propagation of solitary waves in origami-inspired metamaterials J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-23 Quan Zhang, Stephan Rudykh
We propose a design strategy for creating origami-like mechanical metamaterials with diverse non-linear mechanical properties and capable of remote actuation. The proposed triangulated cylindrical origami (TCO)-inspired metamaterials enable the highly desirable strain-softening/hardening and snap-through behaviors via a multi-material and highly deformable hinge design. Moreover, we couple these novel
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Micromechanical analyses on bending of polysynthetically twinned single crystal of titanium aluminide J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-20 Z. Wang, W.H. Wong, T.F. Guo
Micromechanical bending analyses CPFEM of polysynthetically twinned (PST) single crystal of TiAl composing of one -phase lamella and six –phase lamellae have been performed. The results have demonstrated that a decrease in the domain size aspect ratio or an increase in the volume fraction of phase have an effect of increasing the induced bending moment and consequently bending resistance under both
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Incremental variational approach to gradient damage coupled with poroelasticity of saturated media J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-20 Xiao-Dong Zhang, Long Cheng, Djimédo Kondo, Albert Giraud
In this study, we aim at investigating the coupling between poroelasticity (including the fluid flow) and gradient damage phenomena in saturated porous media. To this end, we first extend the thermodynamics-based Biot–Coussy theory of poroelasticity in order to incorporate gradient damage processes. Taking advantage of this framework, we establish a variational formulation for the proposed model, expressed
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Experimental assessment of the eigenstress state in two-ply yarns and its effect on tensile properties J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-20 Claudio Boni, Vincenzo Andrea Muratore, Gianni Royer-Carfagni
Propaedeutical to a better understanding of the mechanics of cables, with potential applications in material science and biology, tensile tests were performed on two-ply yarns made of rubber rods, manufactured by transforming the twist on two adjacent straight rods into tortuosity for the resulting double-helix shape. Modeling of the yarn as a pair of Kirchhoff rods in reciprocal contact, fails to
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Optimizing nanoporous metallic actuators through multiscale calculations and machine learning J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-19 Sheng Sun, Menghuan Wang, Hanqing Jiang, Ying Zhang, Hang Qiao, Tong-Yi Zhang
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Effect of interphase layer on matrix cracking in fiber reinforced ceramic matrix composites J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-18 Xiaochuan Niu, Yong Ma, Shu Guo, Lu Li, Ruixiao Zheng, Jinwu Xiang, Yuli Chen
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Coupling between viscoelasticity and soft elasticity in main-chain nematic Liquid Crystal Elastomers J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-16 L. Rezaei, G. Scalet, M. Peigney, A. Azoug
Liquid crystal elastomers (LCEs) are a class of smart elastomers exhibiting unusual mechanical behavior, including large energy dissipation and soft elasticity under uniaxial tensile loading. LCEs are composed of liquid crystal molecules, called mesogens, linked by a network of polymer chains. During deformation, the mesogens orient in the direction of the loading, leading to soft elasticity, which
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Nonlinear optimization for compact representation of orientation distributions based on generalized spherical harmonics J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-16 Russell E. Marki, Marko Knezevic
An orientation distribution is a necessary input in any crystal plasticity simulation. The computational time involved in crystal plasticity simulations scales linearly with the number of crystal orientations in the input distributions. Reducing the number of crystal orientations in representing the input orientation distributions quantitatively is a critical and necessary requirement for performing
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Multiscale Thermodynamics-Informed Neural Networks (MuTINN) towards fast and frugal inelastic computation of woven composite structures J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-16 M. El Fallaki Idrissi, F. Praud, F. Meraghni, F. Chinesta, G. Chatzigeorgiou
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Surface wrinkling of a film coated to a graded substrate J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-16 Rui-Cheng Liu, Yang Liu, Alain Goriely
We study the surface wrinkling of a stiff thin elastic film bonded to a compliant graded elastic substrate subject to compressive stress generated either by compression or growth of the bilayer. Our aim is to clarify the influence of the modulus gradient on the onset and surface pattern in this bilayer. Within the framework of finite elasticity, an exact bifurcation condition is obtained using the
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Curvature controls beading in soft coated elastic cylinders: Finite wavemode instability and localized modulations J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-15 Matteo Taffetani, Matthew G. Hennessy
Axisymmetric beading instabilities in soft, elongated cylinders have been observed in a plethora of scenarios, ranging from cellular nanotunnels and nerves in biology to swollen cylinders and electrospun fibers in polymer physics. One of the common geometrical features that can be seen in these systems is the finite wavelength of the emerging pattern. However, modelling studies often predict that the
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Computational multiscale modelling of material interfaces in electrical conductors J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-13 Tobias Kaiser, Niklas von der Höh, Andreas Menzel
Material interfaces occur at various length scales and may exhibit significantly different properties than the surrounding bulk. Motivated by their importance for electrical engineering applications such as wire bonds and electrically conductive adhesives, the focus of the present work is on material interfaces in electrical conductors. In order to approximate the physical interphase (of finite thickness)
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Configurational force method enables fracture assessment in soft materials J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-12 Miguel Angel Moreno-Mateos, Paul Steinmann
Configurational mechanics offers a framework for quantifying the tendency of defects to alter the material configuration. When applied to fracture mechanics, configurational forces can be used to quantify the propensity of cracks to propagate. An alternative, well-established approach involves analytical solutions for crack tip displacement fields. However, these solutions typically apply to a limited
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Mechanobiological tortuosity of blood vessels with stress-modulated growth and remodeling J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-11 Wei-Zhi Huang, Bo Li, Xi-Qiao Feng
The stability of blood vessels is essential for maintaining their functions, while severe blood vessel tortuosity leads to various clinical complications. The growth and remodeling of blood vessels, which are regulated by mechanical and biochemical cues, cause residual stresses that affect vessel stability. In this paper, we combine theory and simulations to study the mechanobiological behavior of
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Thermal cracking: Clarifying the effects of phases, voids and grains through characterisation and crystal plasticity modelling J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-11 Wei Wang, Ruiqiang Zhang, Amir A Shirzadi, Daniel S Balint, Lee Aucott, Jun Jiang
Thermally-induced cracking typically occurs during the cooling stage of various manufacturing processes, and is commonly seen in multiphase or the joints of dissimilar materials due to mismatch in their thermo-mechanical properties, such as thermal expansion, elastic-plastic deformation and, in some cases, phase transformation. However, the underlying cracking mechanism associated with local microstructure
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Fully optimized second-order estimates for the macroscopic behavior and field statistics of particle-reinforced viscoplastic composites J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-07 Christoph Kammer, Pedro Ponte Castañeda
This paper is concerned with the characterization of the macroscopic behavior and statistics for the distribution of the stress and strain-rate fields in composites consisting of random and isotropic suspensions of rigid spherical particles in power-law viscoplastic materials. For this purpose, use is made of the Fully Optimized Second-Order (FOSO) homogenization method (Ponte Castañeda, 2016) in combination
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The dominating dimensionless numbers of an elastic-plastic thin plate under dynamic loading J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-04 Xiaorun Huang, Yongjie Feng, Mu Wang, Xinming Qiu
The response of an elastic-plastic thin plate under dynamic loading cannot be solved theoretically since both geometrical and material nonlinearities are involved and also highly coupled. Obviously, the response will be affected by material properties, geometries, and loads, whose effects are usually studied separately. In order to avoid repeated investigations and save costs, identifying the combined
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Mapping deformation and dissipation during fracture of soft viscoelastic solid J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-02 Yuan Qi, Xueyu Li, Sairam Pamulaparthi Venkata, Xingwei Yang, Tao Lin Sun, Chung-Yuen Hui, Jian Ping Gong, Rong Long
Energy dissipation around a propagating crack is the primary mechanism for the enhanced fracture toughness in viscoelastic solids. Such dissipation is spatially non-uniform and is highly coupled to the crack propagation process due to the history-dependent nature of viscoelasticity. We present an experimental approach to map the dissipation field during crack propagation in soft viscoelastic solid
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Exploring static responses, mode transitions, and feasible tunability of Kagome-based flexible mechanical metamaterials J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-02 Jian Li, Ronghao Bao, Weiqiu Chen
We consider the static responses of the uniaxially compressed flexible mechanical metamaterials, which integrate soft hinges and rigid bodies, constructed from the Kagome lattice. First, we experimentally find that the static responses of the regular-Kagome-based structure significantly differ from those of the twisted-Kagome-based structure with a very small twisting angle. Following this, we establish
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A Theoretical Model of Enhanced Adhesion of Bioinspired Micropillar Arrayed Surfaces J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-03-01 Yonggui Cheng, Zhilong Peng, Shaohua Chen
To achieve better adhesion, micropillar arrayed surfaces inspired by the gecko adhesion system have gained significant attention. However, debate continues on whether micropillar arrayed surfaces actually enhance interfacial adhesion compared to smooth surfaces. To clearly understand the factors influencing the adhesion force of micropillar arrayed surfaces and provide a criterion for achieving enhanced
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Plastic deformations and strain hardening in fully dense granular crystals J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-29 Ashta Navdeep Karuriya, Francois Barthelat
Granular crystals are intriguing constructs at the intersection between granular matter and architectured materials, offering new combinations of tunable mechanical properties, healing and recyclability. We have recently fabricated and tested strong, fully dense granular FCC crystals based on millimeter size rhombic dodecahedral grains. These “granular metamaterials” display a rich set of mechanisms:
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High-efficient and reusable impact mitigation metamaterial based on compression-torsion coupling mechanism J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-29 Haifeng Ou, Lingling Hu, Yanbin Wang, Chang Liu
Lightweight and reusable materials are desired in engineering for mitigating repetitive impacts. However, the limitation of mitigation efficiency is always a problem in spite of various materials have been studied. And other issues need to be improved, such as bulky and poor load-bearing. There still exists challenge to design a reusable impact mitigation material with high efficient, lightweight and
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Ellipticity enhances adhesion strength for contacts under shear loads J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-28 Fa Wu, Qingao Wang, Chun Li, Qunyang Li, Huajian Gao
Adhesion under a shear load parallel to the contact interface is a common issue in engineering and biological systems, such as when insects and adhesion devices crawl on vertical walls. A question of interest is whether and how the shear load influences the adhesion behavior between an elliptical flat punch and an elastic medium. Here, we derive lower- and upper-bound limiting analytical solutions
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Analytical boundary integral solutions for cracks and thin fluid-filled layers in a 3D poroelastic solid in time and wavenumber domain J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-28 Elías R. Heimisson
The spectral boundary integral (SBI) method has been widely employed in the study of fractures and friction within elastic and elastodynamic media, given its natural applicability to thin or infinitesimal interfaces. Many such interfaces and layers are also prevalent in porous, fluid-filled media. In this work, we introduce analytical SBI equations for cracks and thin layers in a 3D medium, with a
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Third-order exceptional points and frozen modes in planar elastic laminates J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-28 Ariel Fishman, Guy Elbaz, T. Venkatesh Varma, Gal Shmuel
Exceptional points (EPs) are degeneracies of two or more natural modes of open systems, which lead to unusual wave phenomena. Despite the robustness against imperfections of spatial EPs, they are less studied relative to temporal EPs, particularly in elastodynamics. However, elastic waves exhibit features not found in sound and light, which have proven useful for forming spatial EPs. Here, we harness
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Challenging the paradigm for reactive material's ignition from shear to pressure: Thermomechanical study of Al-PTFE J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-23 G.G. Goviazin, R. Ceder, S. Kalabukhov, S. Hayun, D. Rittel
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Fracture toughness of two-dimensional materials dominated by edge energy anisotropy J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-22 Maolin Yu, Zhiqiang Zhao, Wanlin Guo, Zhuhua Zhang
Two-dimensional materials (2DMs) are prone to brittle failure under load but a recent experiment has demonstrated intrinsic toughening in hexagonal boron nitride (-BN), which calls for a general understanding of fracture toughness in 2DMs. Using atomistic calculations combined with a developed size-dependent extrapolation method, we show that 2DMs with strong anisotropy of edge energy favor bifurcated
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Experimental characterization and constitutive modeling of thermoplastic polyurethane under complex uniaxial loading J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-21 Sergio I. Reyes, Michalis F. Vassiliou, Dimitrios Konstantinidis
This paper presents the testing and constitutive modeling of a Thermoplastic Polyurethane (TPU) compound used in commercial applications. The tested specimens were extracted directly from a TPU sphere used in check valves through water-jet cutting. The tests included tensile and compression tests under complex uniaxial loading protocols to capture different nonlinear phenomena, such as stress softening
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Mechanistic mapping of random fields for stochastic finite element simulations of quasibrittle fracture J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-21 Josh Vievering, Jia-Liang Le
Spurious mesh sensitivity is a major challenge in continuum finite element (FE) simulations of damage and fracture of quasibrittle structures. It has been shown that the existing localization limiters, which largely focus on energy regularization, are insufficient for addressing the issue of mesh sensitivity in stochastic analysis. In this study, we investigate the mathematical algorithm for mapping
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Fluid-injection control on energy partitioning during the earthquake cycle J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-20 Maryam Alghannam, Hector Gomez, Ruben Juanes
During an earthquake, the elastic energy stored in the Earth is released as frictional energy and radiated energy in the form of seismic waves. The partitioning of energy released during an earthquake gives an indication of the overall size of the earthquake and its potential for damage to man-made structures. Here, we perform an energy analysis of fluid-injection-induced earthquakes using a single-degree-of-freedom
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On rapid compaction of granular materials: Combining experiments with in-situ imaging and mesoscale modeling J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-20 Mohmad M. Thakur, Sohanjit Ghosh, Ryan C. Hurley
Grain and pore kinematics are important features of the response of granular materials to impact loading and rapid compaction. These kinematics and the associated material-phase stresses control solidification processes in shock-driven manufacturing and ignition in energetic materials. Diagnostics used in traditional gas-gun experiments cannot resolve spatially-heterogeneous grain and pore kinematics
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Prediction of yield surface of single crystal copper from discrete dislocation dynamics and geometric learning J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-17 Wu-Rong Jian, Mian Xiao, WaiChing Sun, Wei Cai
The yield surface of a material is a criterion at which macroscopic plastic deformation begins. For crystalline solids, plastic deformation occurs through the motion of dislocations, which can be captured by discrete dislocation dynamics (DDD) simulations. In this paper, we predict the yield surfaces and strain-hardening behaviors using DDD simulations and a geometric manifold learning approach. The
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A reactive electrochemomechanical theory for growth and remodeling of polyelectrolyte hydrogels and application to dynamic polymerization of DNA hydrogels J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-17 Brandon K. Zimmerman, Bibekananda Datta, Ruohong Shi, Rebecca Schulman, Thao D. Nguyen
This study develops a framework for growth and remodeling of active polyelectrolyte hydrogels that accounts for effects of compositional changes on the mechanical response. By developing a reactive electrochemomechanical theory, thermodynamical constraints upon reactive and remodeling processes are elucidated within a general framework that allows any number of chemical reactions to evolve the response
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Anomalous tension–compression asymmetry in amorphous silicon: insights from atomistic simulations and elastoplastic constitutive modeling J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-13 Bin Ding, Liang Hu, Yuan Gao, Yuli Chen, Xiaoyan Li
Recent experiments observed an inherent, anomalous tension-compression (T-C) asymmetry with T>C in microscale amorphous silicon (a-Si), which is free of dominant microcracks or dislocations. However, quantifying the disordered structure of a-Si and correlating it with T-C asymmetry remains mysterious. Here, we first conduct a series of atomistic simulations to explore this anomaly in a-Si. Results
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Physics-infused deep neural network for solution of non-associative Drucker–Prager elastoplastic constitutive model J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-12 Arunabha M. Roy, Suman Guha, Veera Sundararaghavan, Raymundo Arróyave
In the present work, a physics-informed deep learning-based constitutive modeling approach has been introduced, for the first time, to solve non-associative Drucker–Prager elastoplastic solid governed by a linear isotropic hardening rule. A purely data-driven surrogate modeling approach for representing complex and highly non-linear elastoplastic constitutive response prevents accurate predictions
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Viscoelastic mechanics of two-dimensional granular lattices J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-10 Srinivas Selvaraju, Shailendra P. Joshi, Nikhil Karanjgaokar
We study the rate-dependent mechanics of viscoelastic granular packings. Using a two-dimensional, square lattice of particles as a motif mimicking nominally mono-disperse granular packings, we perform a suite of finite element simulations under rate-dependent uniaxial compaction followed by unloading. The focus is on understanding the macroscopic force–displacement relations and the porosity evolution
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A multiscale viscoelastic fiber dispersion model for strain rate-dependent behavior of planar fibrous tissues J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-10 Kewei Li, Gerhard A. Holzapfel
Recently, we introduced an efficient discrete fiber dispersion model for characterizing the mechanical behavior of soft fibrous tissues, and we also extended that model to consider microscale collagen fiber recruitment, softening, and damage. However, the viscous behavior of collagen fibers was not considered in that study. The goal of this study is to further extend the discrete fiber dispersion model
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On the (lack of) representativeness of quasi-static variational fracture models for unstable crack propagation J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-09 A. Chao Correas, J. Reinoso, P. Cornetti, M. Corrado
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An elastic-damaging cohesive law for cell–substrate adhesion with positive and negative durotaxis J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-09 Elena Benvenuti, Gino Antonio Reho
Durotaxis of cells anchored to the extracellular matrix through focal adhesions has been systematically studied through both analytical and computational approaches. However, recent experiments have revealed the attitude of certain cells to unexpectedly migrate towards comparatively softer substrates, thus suggesting the possibility for to manifest. Cell migration is possible because focal adhesions
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A constitutive model for hydrogels with tunable mechanical properties by salting-out J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-08 Junwei Xu, Jian Li, Xiaocheng Hu, Danming Zhong, Weiqiu Chen, Shaoxing Qu
Hydrogels with tunable mechanical properties hold significant potential for applications in various fields. Salting-out has proven to be an effective way for substantially and reversibly regulating the mechanical properties of hydrogels. In this study, we explored the evolution of the mechanical behaviors of Polyacrylamide/Chitosan (PAAm/CS) composite hydrogels with salting-out experimentally, and
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Design of origami structures with curved tiles between the creases J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-02 Huan Liu, Richard D. James
An efficient way to introduce elastic energy that can bias an origami structure toward desired shapes is to allow curved tiles between the creases. The bending of the tiles supplies the energy and the tiles themselves may have additional functionality. In this paper, we present a basic theorem and systematic design methods for quite general curved origami structures that can be folded from a flat sheet
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Machine learning and sequential subdomain optimization for ultrafast inverse design of 4D-printed active composite structures J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-02 Xiaohao Sun, Luxia Yu, Liang Yue, Kun Zhou, Frédéric Demoly, Ruike Renee Zhao, H. Jerry Qi
Shape transformations of active composites (ACs) depend on the spatial distribution and active response of constituent materials. Voxel-level complex material distributions offer a vast possibility for attainable shape changes of 4D-printed ACs, while also posing a significant challenge in efficiently designing material distributions to achieve target shape changes. Here, we present an integrated machine
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Effective surface forces and non-coherent interfaces within the reduced relaxed micromorphic modeling of finite-size mechanical metamaterials J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-02 Leonardo A. Perez Ramirez, Félix Erel-Demore, Gianluca Rizzi, Jendrik Voss, Angela Madeo
This paper introduces for the first time the concepts of non-coherent interfaces and microstructure-driven interface forces in the framework of micromorphic elasticity. It is shown that such concepts are of paramount importance when studying the response of finite-size mechanical metamaterials at the homogenized macro-scale. The need of introducing interface forces is elucidated through numerical examples
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A general mechanism for long-range friction modulation in graphene-based moiré heterostructures J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-02-02 Ke Huang, Yilun Liu
The moiré scale friction modulation is a well-known phenomenon for tip sliding on van der Waals heterostructures. In this study, we have discovered a general rule that governs the long-range friction modulation in graphene-based moiré heterostructures. Firstly, the moiré in-plane lattice reconstruction regulates out-of-plane moiré morphology. Secondly, the in-plane deformation of graphene induced by
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Shape-Dependent Friction Scaling Laws in Twisted Layered Material Interfaces J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-26 Weidong Yan, Xiang Gao, Wengen Ouyang, Ze Liu, Oded Hod, Michael Urbakh
Static friction induced by moiré superstructure in twisted incommensurate finite layered material interfaces reveals unique double periodicity and lack of scaling with contact size. The underlying mechanism involves compensation of incomplete moiré tiles at the rim of rigid polygonal graphene flakes sliding atop fixed graphene or h-BN substrates. The scaling of friction (or lack thereof) with contact
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Combined influence of shallowness and geometric imperfection on the buckling of clamped spherical shells J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-26 Kanghyun Ki, Jeongrak Lee, Anna Lee
We investigate the combined influence of shallowness and geometric imperfection on the pressure-induced buckling behavior of clamped spherical shells. The buckling phenomenon in spherical shells has gained significant interest in diverse fields, such as soft robotics and biomechanics, due to its distinct and drastic shape morphing characteristics. However, a notable discrepancy between analytic solutions
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A machine learning perspective on the inverse indentation problem: uniqueness, surrogate modeling, and learning elasto-plastic properties from pile-up J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-26 Quan Jiao, Yongchao Chen, Jong-hyoung Kim, Chang-Fu Han, Chia-Hua Chang, Joost J. Vlassak
The inverse analysis of indentation curves, aimed at extracting the stress-strain curve of a material, has been under intense development for decades, with progress relying mainly on the use of analytical expressions derived from small data sets. Here, we take a fresh, data-driven perspective to this classic problem, leveraging machine learning techniques to advance indentation technology. Using a