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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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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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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 were 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
The present work is devoted to prove that unstable crack propagation events do not comply with quasi-static hypotheses and thus should be modelled by dynamic approaches. Comprehensive supporting evidence is provided on the basis of three different analyses conducted on multi-ligament unstable fracture conditions, including a simplified Spring-Mass model, detailed quasi-static and dynamic Phase Field
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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
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Revealing the shear fatigue damage mechanism of soft adhesive: Coexistence of viscoelastic and damage dissipation J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-26 Yan Xia, Han Jiang, Chengbin Yao, Zhuoran Yang, Zhongmeng Zhu, Guozheng Kang
Shear fatigue has become one of the typical failure modes of soft adhesives used in advanced engineering applications. The fatigue damage is naturally coexistent with the viscoelastic dissipation during the shear fatigue for typical soft adhesives, which raises difficulty in directly evaluating the actual fatigue damage evolution. In this paper, an experimental approach is proposed based on the energy
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On the role of plastic relaxation in stress assisted grain boundary oxidation J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-20 Y. Piao, D.S. Balint
The influence of plasticity on the high-temperature stress-assisted grain boundary oxidation of nickel-based superalloys used in applications such as turbine rotor discs is investigated using the method of discrete dislocation plasticity (DDP). The misfit stress fields of nib-shaped intrusions are captured by a continuous distribution of edge dislocations whose extra half planes represent the volumetric
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Effective isometries of periodic shells J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-24 Hussein Nassar, Andrew Weber
We argue that the standard classification of isometric deformations into infinitesimal v.s. finite is inadequate for the study of compliant shell mechanisms. Indeed, many compliant shells, particularly ones that are periodically corrugated, exhibit low-energy deformations that are far too large to be infinitesimally isometric and far too rich to be finitely isometric. Here, rather than abandon the
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Modeling storage particle delamination and electrolyte cracking in cathodes of solid state batteries J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-18 Tao Zhang, Marc Kamlah, Robert M. McMeeking
Interface delamination between storage particles and solid electrolytes contributes to greater impedance for Li transfer and capacity loss in solid-state batteries. Electrolyte cracking would cause degradation of the ionic or electronic conductivity of electrolytes. The occurrence of interface delamination and electrolyte cracking is commonly ascribed to mechanical stress, which evolves from inhomogeneous
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A continuous phase-evolution model for cold and strain-induced crystallization in semi-crystalline polymers J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-20 Ming Lei, Shuailong Ren, Yulin Xiong, Jinyou Xiao, Lihua Wen, Haibao Lu, Xiao Hou
The dynamic crystallization during extreme thermomechanical history under producing or service strongly influences the dimensional stability of the semi-crystalline thermoplastic polymers. To produce high-precision structural components, the proper thermomechanical history needs to be carefully designed to eliminate the crystallization-induced shrinkage. On the contrary, the rapidly developed four-dimensional
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Elastic fields of double branched and Kalthoff–Winkler cracks in a half-plane J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-17 Yangjian Si, Yujie Wei
We demonstrate in this paper a combination of the Schwarz-Christoffel mapping and Muskhelishvili’s approach with fractional function series in solving the elastic fields of a cracked half-plane, and zoom in on two typical problems, a double branched crack with two rays emanating from one point on the edge and two edge cracks spaced by a certain distance. Typical loading conditions are considered, including
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Representation of stress and free energy for a viscoelastic body from a stressed reference J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-14 Soumya Mukherjee, Parag Ravindran
Viscoelastic materials are often initially or residually stressed in the reference configuration. This stress and associated configuration may also evolve temporally without any external influence or loading. This paper develops a general framework representing the stress and Helmholtz potential from a stressed viscoelastic reference configuration. The Helmholtz function is assumed to depend on the
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Stress discontinuity and singularity around the vertex of a triangular inhomogeneity J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-14 Chunlin Wu, Huiming Yin
The stress field around a vertex of angular inhomogeneity has been investigated by Eshelby’s equivalent inclusion method (EIM). Different from Eshelby’s problem for ellipsoidal inhomogeneity with a uniform or polynomial eigenstrain, a singular eigenstrain field is derived by Airy’s stress function and asymptotic analysis, in which the singular elastic fields can be expressed in terms of the distance
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On the theory of mechanically induced chemiluminescence in multiple network elastomers J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-09 Peng Sun, Shaoxing Qu, Rui Xiao
Mechanophores, force-sensitive molecules, can be covalently linked into polymer networks to reveal the damage properties of polymeric materials under deformation. Recent works have introduced bis-adamantyl dioxetane (Ad) into multiple network elastomers. These mechanoluminescent cross-linking molecules can emit luminescence as they break. The experimental results can directly visualize the damage behaviors
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Grain boundary network plasticity: Reduced-order modeling of deformation-driven shear-coupled microstructure evolution J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-09 Daniel Bugas, Brandon Runnels
Microstructural evolution in structural materials is known to occur in response to mechanical loading and can often accommodate substantial plastic deformation through the coupled motion of grain boundaries (GBs). This can produce desirable behavior, such as increased ductility, or undesirable behavior such as mechanically-induced coarsening. In this work a novel, multiscale model is developed for
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Nonlinear constitutive model of CFRP composites under constant direct current: Combined effects of thermal damage and dielectric degradation J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-13 Haoran Song, Zheng Zhong
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Temperature-dependent, multi-mechanism crystal plasticity reveals the deformation and failure behaviour of multi-principal element alloys J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-13 Yilun Xu, Xiaochong Lu, Xinyu Yang, Wanghui Li, Zachary Aitken, Guglielmo Vastola, Huajian Gao, Yong-Wei Zhang
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A new methodology for anisotropic yield surface description using model order reduction techniques and invariant neural network J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-12 Chady Ghnatios, Oana Cazacu, Benoit Revil-Baudard, Francisco Chinesta
In this paper, we present a general methodology that we call spectral neural network (SNN) which enables to generate automatically knowing a few datapoints (eight at most), a sound and plausible yield surface for any variations of a given anisotropic material, e.g. batches of the same material or same type of material produced by a different supplier. It relies on the use of a reliable parametrization
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Enhancing toughness through geometric control of the process zone J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-10 Sage Fulco, Michal K. Budzik, Kevin T. Turner
Material architecture provides an opportunity to alter and control the fracture process zone shape and volume by redistributing the local stresses at a crack tip. Properly designed structures can enlarge the plastic zone and enhance the effective toughness. Here, we use a pillar array as a model structure to demonstrate how variations in geometry at a crack tip control the size and shape of the plastic
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Morphomechanics of growing curled petals and leaves J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-03 Ting Wang, Chenbo Fu, Michel Potier-Ferry, Fan Xu
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On the origin of Sanchez-Lacombe equation of state theory in hydrostatic strain energy model for rubber-like materials J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-01 Chang Liu, Haibao Lu
To capture the volume deformation of rubber-like materials, the strain energy density (SED) function of a compressible hyperelastic model is formulated as the hydrostatic/liquid-like term from interchain interaction changes plus the compressible elastic term owing to elastic deformation of crosslinking network. Notably, the former term dominates volume responses. Although the physics of the hydrostatic
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Predicting protein thermal stability changes upon single and multi-point mutations via restricted attention subgraph neural network J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-04 Mohammad Madani, Anna Tarakanova
Accurate prediction of protein stability changes due to mutations is instrumental for understanding mechanisms of disease and drug failure, as well as for engineering tailored protein-based materials. In recent years, computational tools using machine learning have been developed to predict stability changes and thereby supplement available experimental methods that may be time consuming and costly
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Thermal fluctuations (eventually) unfold nanoscale origami J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-04 Matthew Grasinger, Pradeep Sharma
Origami is a scale invariant paradigm for morphing robotics, deployable structures (e.g. satellites, disaster relief shelters, medical stents), and metamaterials with tunable thermal, mechanical, or electromagnetic properties. There has been a resurgence of interest in using origami principles – along with 2D materials or DNA – to design a wide array of nanoscale devices. In this work, we take cognizance
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Force relaxation response in the poroelastic axisymmetric Boussinesq problem for an indenter of arbitrary profiles I: Permeable and impermeable surface drainage conditions J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-01-02 Ming Liu, Xin Wen
In this study, we have derived a theoretical solution for the poroelastic axisymmetric Boussinesq problem when an indenter with arbitrary profiles is subjected to step displacement loading. The analysis is conducted within the framework of Biot’s theory, employing the McNamee–Gibson displacement function method. We explore two distinct scenarios for surface drainage boundary conditions: one where the
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Rate Induced Thermomechanical Interactions in NiTi Tensile Tests on Strips J. Mech. Phys. Solids (IF 5.3) Pub Date : 2023-12-29 Solon Tsimpoukis, Stelios Kyriakides
The paper uses tensile experiments on NiTi strips at different displacement rates to establish and simulate the thermomechanical interactions caused by the latent heat of the reversible transformation between the austenitic and martensitic phases. The evolution of deformation in the specimen is synchronously monitored with digital image correlation, and the temperature field through infrared imaging
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Non-slipping adhesive contact between dissimilar elastic solids under normal and tangential loads J. Mech. Phys. Solids (IF 5.3) Pub Date : 2023-12-22 Lifeng Ma, Yifeng Chen, David A. Hills
In this paper, a model of two-dimensional non-slipping adhesive contact between dissimilar elastic solids under normal and tangential loads is proposed, and the general analytical solution is derived. The interaction of adhesion and friction along the contacting interface is studied. Specifically, (i) the shear-off force of adhesive contact is proposed; (ii) the effect of tangential load on the puff-off
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Initializing intragranular residual stresses within statistically equivalent microstructures for crystal plasticity simulations J. Mech. Phys. Solids (IF 5.3) Pub Date : 2023-12-24 Ritwik Bandyopadhyay, Krzysztof S. Stopka, Michael D. Sangid
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Initiation of motility on a compliant substrate J. Mech. Phys. Solids (IF 5.3) Pub Date : 2023-12-18 Jocelyn Étienne, Pierre Recho
The conditions under which biological cells switch from a static to a motile state are fundamental to the understanding of many healthy and pathological processes. In this paper, we consider a cell constrained to move along a one-dimensional track. We show that even in the presence of a fully symmetric protrusive activity at the cell edges, such a spontaneous transition can result from a feedback of
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Mechanism of crack evolution and strength failure in chemo-mechanical induced fracture J. Mech. Phys. Solids (IF 5.3) Pub Date : 2023-12-16 Jiajing Yin, Quanzi Yuan
Chemo-mechanical coupled fracture is ubiquitous among various application fields. Understanding the mechanism of crack propagation is critical to the prediction and control of fracture behavior. In this paper, mechanical damage and chemical erosion have been investigated by a combination of experiments and theoretical analysis. We developed a theoretical model to analyze the interface evolution and