Journal of The Mechanics and Physics of Solids最新文献_第6页

Taylor-Quinney coefficient determination from simultaneous strain and temperature measurements of uniform and localized deformation in tensile tests 泰勒-昆尼系数由拉伸试验中均匀变形和局部变形的同时应变和温度测量确定

IF 5 2区工程技术

Journal of The Mechanics and Physics of Solids Pub Date : 2025-02-27 DOI: 10.1016/j.jmps.2025.106099

Jarrod L. Smith, Jeremy D. Seidt, Carter J. Fietek, Amos Gilat

{"title":"Taylor-Quinney coefficient determination from simultaneous strain and temperature measurements of uniform and localized deformation in tensile tests","authors":"Jarrod L. Smith, Jeremy D. Seidt, Carter J. Fietek, Amos Gilat","doi":"10.1016/j.jmps.2025.106099","DOIUrl":"10.1016/j.jmps.2025.106099","url":null,"abstract":"<div><div>Experimental determination of the Taylor-Quinney coefficient (TQC), <span><math><mi>β</mi></math></span>, from tensile tests at nominal strain rates of 1.0 s<sup>-1</sup> and 500 s<sup>-1</sup> is presented. Simultaneous full-field measurements of the deformation (strain) and temperature on the surface of the specimens are made throughout the tests, including in the localized region during necking. These measurements provide means to determine the value of the TQC at large strains. Results from testing Inconel 718 show that during the uniform deformation portion of the tests (up to a strain of about 0.15 before necking initiation) the conditions at the center of the specimen's gage section are adiabatic in both strain rates and the TQC can be determined accurately. Large strains and significant increase in temperature are observed in the necking region once it develops. Analysis of the measured data shows that in the 500 s<sup>-1</sup> strain rate test the necking process is sufficiently fast (about 165 μs) such that the center of the necking deforms under adiabatic conditions and the TQC can accurately be determined up to a strain of 0.36. In the 1.0 s<sup>-1</sup> strain rate test, where the necking process lasts much longer (about 110 ms), some heat is conducted away from the center of the necking region and the TQC can accurately be determined only during the uniform deformation up to a strain of 0.15.</div></div>","PeriodicalId":17331,"journal":{"name":"Journal of The Mechanics and Physics of Solids","volume":"199 ","pages":"Article 106099"},"PeriodicalIF":5.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bimodal scaling law and size effect in superelastic nanopillars 超弹性纳米柱的双峰标度规律与尺寸效应

IF 5 2区工程技术

Journal of The Mechanics and Physics of Solids Pub Date : 2025-02-27 DOI: 10.1016/j.jmps.2025.106088

Mostafa Karami , Xian Chen

引用次数: 0

Physics-informed recovery of nonlinear residual stress fields in an inverse continuum framework 逆连续体框架中非线性残余应力场的物理信息恢复

IF 5 2区工程技术

Journal of The Mechanics and Physics of Solids Pub Date : 2025-02-27 DOI: 10.1016/j.jmps.2025.106079

José A. Sanz-Herrera , Alain Goriely

{"title":"Physics-informed recovery of nonlinear residual stress fields in an inverse continuum framework","authors":"José A. Sanz-Herrera , Alain Goriely","doi":"10.1016/j.jmps.2025.106079","DOIUrl":"10.1016/j.jmps.2025.106079","url":null,"abstract":"<div><div>Residual stresses play a critical mechanical role in both industrial and biomechanical applications. In biological tissues, residual stresses arise from growth and remodeling processes under physiological or pathological conditions and have been extensively modeled within the framework of nonlinear elasticity. These modeling efforts have enabled direct computation of residual stress patterns based on phenomenological growth laws. However, experimental validation and feedback for these models remain limited due to the inherent challenges in measuring complex stress distributions. To address this limitation, we propose and develop an inverse approach for estimating nonlinear residual stresses using information from an externally loaded configuration. Specifically, the algorithm employs domain displacement fields and externally applied loads as input data, which can be experimentally obtained through biaxial testing and digital image correlation (DIC) techniques. This novel formulation and numerical scheme are rooted in a physics-informed continuum framework that enforces universal principles of mechanics. To evaluate the framework, a synthetically generated ground-truth solution serves as a reference, allowing assessment of the accuracy of residual stress field reconstruction across varying levels of noise in the input data. Performance metrics indicate a significant improvement in reconstruction accuracy when multiple load cases and combined datasets are used. This approach paves the way for the formulation of growth laws and residual patterns based on experimental data.</div></div>","PeriodicalId":17331,"journal":{"name":"Journal of The Mechanics and Physics of Solids","volume":"200 ","pages":"Article 106079"},"PeriodicalIF":5.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A steady-state frictional crack in a strip 带材上的稳态摩擦裂纹

IF 5 2区工程技术

Journal of The Mechanics and Physics of Solids Pub Date : 2025-02-25 DOI: 10.1016/j.jmps.2025.106086

Efim A. Brener , Eran Bouchbinder

{"title":"A steady-state frictional crack in a strip","authors":"Efim A. Brener , Eran Bouchbinder","doi":"10.1016/j.jmps.2025.106086","DOIUrl":"10.1016/j.jmps.2025.106086","url":null,"abstract":"<div><div>The analogy between frictional cracks, propagating along interfaces in frictional contact, and ordinary cracks in bulk materials is important in various fields. We consider a stress-controlled frictional crack propagating at a velocity <span><math><msub><mrow><mi>c</mi></mrow><mrow><mi>r</mi></mrow></msub></math></span> along an interface separating two strips, each of height <span><math><mi>H</mi></math></span>, the frictional counterpart of the classical problem of a displacement-controlled crack in a strip, which played central roles in understanding material failure. We show that steady-state frictional cracks in a strip geometry require a nonmonotonic dependence of the frictional strength on the slip velocity and, in sharp contrast to their classical counterparts, feature a vanishing stress drop. Here, rupture is driven by energy flowing to its edge from behind, generated by an excess power of the external stress, and to be accompanied by an increase in the stored elastic energy, in qualitative contrast to the classical counterpart that is driven by the release of elastic energy stored ahead of the propagating edge. Finally, we derive a complete set of mesoscopic and macroscopic scaling relations for frictional cracks in a strip geometry and demonstrate that the stress singularity near their edges is proportional to <span><math><mrow><mrow><mo>(</mo><mi>Δ</mi><mi>v</mi><mo>/</mo><msub><mrow><mi>c</mi></mrow><mrow><mi>r</mi></mrow></msub><mo>)</mo></mrow><msqrt><mrow><mi>H</mi></mrow></msqrt></mrow></math></span>, where <span><math><mrow><mi>Δ</mi><mi>v</mi></mrow></math></span> is the slip velocity rise accompanying their propagation. The relevance of our findings for various phenomena, including slow rupture/earthquakes, is briefly discussed.</div></div>","PeriodicalId":17331,"journal":{"name":"Journal of The Mechanics and Physics of Solids","volume":"199 ","pages":"Article 106086"},"PeriodicalIF":5.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Control of competing delamination in peeling-based microtransfer printing 剥离微转移印花中竞争分层的控制

IF 5 2区工程技术

Journal of The Mechanics and Physics of Solids Pub Date : 2025-02-24 DOI: 10.1016/j.jmps.2025.106090

Aoyi Luo , Yiping Zhou , Yunfeng Yan , Jianyu Li , Changhong Cao

引用次数: 0

Accretion and ablation in deformable solids using an Eulerian formulation: A finite deformation numerical method 用欧拉公式计算可变形固体中的吸积和烧蚀：一种有限变形数值方法

IF 5 2区工程技术

Journal of The Mechanics and Physics of Solids Pub Date : 2025-02-21 DOI: 10.1016/j.jmps.2025.106076

S. Kiana Naghibzadeh , Anthony Rollett , Noel Walkington , Kaushik Dayal

{"title":"Accretion and ablation in deformable solids using an Eulerian formulation: A finite deformation numerical method","authors":"S. Kiana Naghibzadeh , Anthony Rollett , Noel Walkington , Kaushik Dayal","doi":"10.1016/j.jmps.2025.106076","DOIUrl":"10.1016/j.jmps.2025.106076","url":null,"abstract":"<div><div>Surface growth, i.e., the addition or removal of mass from the boundary of a solid body, occurs in a wide range of processes, including the growth of biological tissues, solidification and melting, and additive manufacturing. To understand nonlinear phenomena such as failure and morphological instabilities in these systems, accurate numerical models are required to study the interaction between mass addition and stress in complex geometrical and physical settings. Despite recent progress in the formulation of models of surface growth of deformable solids, current numerical approaches require several simplifying assumptions.</div><div>This work formulates a method that couples an Eulerian surface growth description to a phase-field approach. It further develops a finite element implementation to solve the model numerically using a fixed computational domain with a fixed discretization. This approach bypasses the challenges that arise in a Lagrangian approach, such as having to construct a four-dimensional reference configuration, remeshing, and/or changing the computational domain over the course of the numerical solution. It also enables the modeling of several settings – such as non-normal growth of biological tissues and stress-induced growth – which can be challenging for available methods.</div><div>The numerical approach is demonstrated on a model problem that shows non-normal growth, wherein growth occurs by the motion of the surface in a direction that is not parallel to the normal of the surface, that can occur in hard biological tissues such as nails, horns, etc. Next, a thermomechanical model is formulated and used to investigate the kinetics of freezing and melting in ice under complex stress states, particularly to capture regelation which is a key process in frost heave and basal slip in glaciers.</div></div>","PeriodicalId":17331,"journal":{"name":"Journal of The Mechanics and Physics of Solids","volume":"200 ","pages":"Article 106076"},"PeriodicalIF":5.0,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the formation of a geometrically necessary boundary using discrete dislocation dynamics 利用离散位错动力学研究几何必要边界的形成

IF 5 2区工程技术

Journal of The Mechanics and Physics of Solids Pub Date : 2025-02-19 DOI: 10.1016/j.jmps.2025.106069

Felix Frankus , Yash Pachaury , Anter El-Azab , Benoit Devincre , Henning Friis Poulsen , Grethe Winther

引用次数: 0

Measurement of temperature-dependent viscoelastic compressibility of highly-filled thermosets using inert gas pressure 用惰性气体压力测量高填充热固性材料的温度依赖性粘弹性压缩性

IF 5 2区工程技术

Journal of The Mechanics and Physics of Solids Pub Date : 2025-02-18 DOI: 10.1016/j.jmps.2025.106087

Sukrut Prashant Phansalkar, Bongtae Han

{"title":"Measurement of temperature-dependent viscoelastic compressibility of highly-filled thermosets using inert gas pressure","authors":"Sukrut Prashant Phansalkar, Bongtae Han","doi":"10.1016/j.jmps.2025.106087","DOIUrl":"10.1016/j.jmps.2025.106087","url":null,"abstract":"<div><div>Highly filled thermosets are widely used to encapsulate chips in the semiconductor packaging industry. A complete set of viscoelastic properties are required for package designs with optimum mechanical reliability. A novel test method, based on inert gas pressure, is proposed and implemented to measure the temperature-dependent viscoelastic hydrostatic creep compliance (or compressibility) of filled thermosets. The method utilizes linearly increasing pressure to mitigate a heat generation problem caused by instantaneous gas pressure application. The hereditary integral for the linear pressure application is derived, and the corresponding normal equations are developed to obtain the generalized Kelvin model constants analytically. The proposed method is implemented using an epoxy-based molding compound. Complete implementation schemes are described, and the compressibility master curve is presented. The validity of the proposed method is verified by supplemental long-term hydrostatic creep tests. The accuracy and repeatability of the proposed method are also discussed.</div></div>","PeriodicalId":17331,"journal":{"name":"Journal of The Mechanics and Physics of Solids","volume":"199 ","pages":"Article 106087"},"PeriodicalIF":5.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inflation of a polydomain nematic elastomeric membrane 多域向列弹性膜的膨胀

IF 5 2区工程技术

Journal of The Mechanics and Physics of Solids Pub Date : 2025-02-17 DOI: 10.1016/j.jmps.2025.106075

Lingrui Zhu, Mengqi He, Baihong Chen, Jin Qian, Rui Xiao

{"title":"Inflation of a polydomain nematic elastomeric membrane","authors":"Lingrui Zhu, Mengqi He, Baihong Chen, Jin Qian, Rui Xiao","doi":"10.1016/j.jmps.2025.106075","DOIUrl":"10.1016/j.jmps.2025.106075","url":null,"abstract":"<div><div>The directors are randomly distributed in polydomain liquid crystal elastomers (LCEs), which can be rearranged upon external loading. This can further lead to a polydomain-monodomain transition, accompanied by a change from an opaque state to a fully transparent state. Currently, the mechanical response and the related phase transition in polydomain LCEs are typically characterized in uniaxial loading conditions. In this work, we employ inflation tests to investigate the complex behaviors of polydomain LCEs under biaxial stress states. Three types of polydomain LCEs were synthesized. The uniaxial tension tests show that the stress–strain curves for all LCEs exhibit a soft stress plateau, followed by a pronounced stress increase with deformation. However, the hardening modulus and the failure stretch ratio differ considerably, leading to distinct responses during inflation processes. For the softest LCEs, a clear snap-through type behavior is observed, while the membrane of the stiffest LCEs fails before reaching the peak pressure value. For the moderately stiff LCEs, the pressure first increases, then reaches a plateau region, and shows a significant increase again. It is further observed that the polydomain-monodomain transition initiates in the bottom part of the membrane balloon and transits to the whole region. For the theoretical aspects, the constitutive relationship of polydomain LCEs is developed through introducing the state variables into the free energy. A numerical model is further constructed to simulate the boundary value problem of inflation tests. The model together with parameters calibrated from the uniaxial tension tests is able to fully capture the response in inflation tests. We also show that the classic hyperelastic models fail to capture the inflation behaviors of polydomain LCE membranes.</div></div>","PeriodicalId":17331,"journal":{"name":"Journal of The Mechanics and Physics of Solids","volume":"198 ","pages":"Article 106075"},"PeriodicalIF":5.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phase-augmented digital image correlation for high-accuracy deformation measurement: Theory, validation, and application to constitutive law learning 用于高精度变形测量的相位增强数字图像相关：理论、验证和本构法学习的应用

IF 5 2区工程技术

Journal of The Mechanics and Physics of Solids Pub Date : 2025-02-14 DOI: 10.1016/j.jmps.2025.106051

Rahul Danda , Xinxin Wu , Sheng Mao , Yin Zhang , Ting Zhu , Shuman Xia

{"title":"Phase-augmented digital image correlation for high-accuracy deformation measurement: Theory, validation, and application to constitutive law learning","authors":"Rahul Danda , Xinxin Wu , Sheng Mao , Yin Zhang , Ting Zhu , Shuman Xia","doi":"10.1016/j.jmps.2025.106051","DOIUrl":"10.1016/j.jmps.2025.106051","url":null,"abstract":"<div><div>Digital image correlation (DIC) is a prominent technique for full-field, non-contact deformation characterization. Despite its sub-pixel sensitivity for displacement measurement, conventional DIC often suffers from inadequate signal-to-noise ratios (SNRs) when measuring small deformations in stiff and/or brittle materials. This work presents phase-augmented DIC (PA-DIC), a novel method that integrates coherent illumination with image correlation to achieve measurement accuracy that surpasses that of conventional DIC. Unlike conventional DIC, which relies on non-coherent illumination to maintain gray-level conservation during deformation, PA-DIC leverages speckle phase information to measure displacement with improved sensitivity. We applied PA-DIC to characterize rigid-body rotation and non-uniform tensile deformation, validating its high accuracy and reliability. Furthermore, we demonstrated its application for machine learning of an orthotropic elastic constitutive relationship. This was achieved using a hybrid finite element method and neural network (FEM-NN) optimization framework supplied with high-accuracy non-uniform strain data from PA-DIC. With its exceptional measurement accuracy, PA-DIC opens new possibilities for advanced full-field measurement and data-driven material characterization in the small deformation regime.</div></div>","PeriodicalId":17331,"journal":{"name":"Journal of The Mechanics and Physics of Solids","volume":"198 ","pages":"Article 106051"},"PeriodicalIF":5.0,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0