Acta Mechanica Solida Sinica最新文献

{"title":"Preface to the Special Issue in Celebration of Professor Zhenbang Kuang’s 90th Birthday","authors":"Shengping Shen, Jubing Chen, Zhenhuan Li","doi":"10.1007/s10338-026-00769-y","DOIUrl":"10.1007/s10338-026-00769-y","url":null,"abstract":"","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 6","pages":"745 - 746"},"PeriodicalIF":2.6,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preface to the “Mechanics of Advanced Composites” Special Issue of Acta Mechanica Solida Sinica","authors":"Jian Xiong","doi":"10.1007/s10338-026-00781-2","DOIUrl":"10.1007/s10338-026-00781-2","url":null,"abstract":"","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 7","pages":"905 - 906"},"PeriodicalIF":2.6,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148613355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Physics-Based Viscoelastic Model and Its Peridynamic Implementation for Polymeric Materials","authors":"Jun Liu,&nbsp;Zewen Gao,&nbsp;Shuang Liang,&nbsp;Yaxin Zhu,&nbsp;Lv Zhao,&nbsp;Minsheng Huang,&nbsp;Zhenhuan Li","doi":"10.1007/s10338-026-00754-5","DOIUrl":"10.1007/s10338-026-00754-5","url":null,"abstract":"<div><p>Developing constitutive models linking chain dynamics to the macroscopic viscoelasticity and fracture of polymeric materials remains challenging. This work presents a physics-informed viscoelastic model accounting for the microstructural evolution of free chains. The viscous stress is decomposed into the relaxation effect arising from the transient elongation of free chains and the disentanglement effect resulting from the release of topological constraints. A deformation-dependent relaxation spectrum is introduced through a revised three-chain model to govern the evolution of free-chain relaxation times in response to macroscopic stretches, enabling the present model to address complex deformation states and loading histories. The present model is comprehensively validated against experimental data for various polymeric materials, accurately capturing their viscoelastic mechanical responses. Furthermore, the present model is incorporated into a peridynamics framework, establishing an integrated numerical method for simulating concurrent viscoelastic deformation and fracture. By establishing a physics-based link from chain dynamics to macroscopic viscoelasticity and fracture, this work provides a powerful tool for modulating the time-dependent properties of polymeric materials and offers new insights into the mechanisms governing viscoelasticity and fracture behavior.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 6","pages":"843 - 856"},"PeriodicalIF":2.6,"publicationDate":"2026-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regulation Mechanisms of Component Parameters on Modulus in Silicon-Based Composite Anodes and Their Contributions to Fracture Behavior","authors":"Zhonglin Zhang,&nbsp;Han Li,&nbsp;Tao Wang,&nbsp;Longfei Li,&nbsp;Yutao Shi,&nbsp;Feng Zhang,&nbsp;Jianqiu Zhou","doi":"10.1007/s10338-026-00706-z","DOIUrl":"10.1007/s10338-026-00706-z","url":null,"abstract":"<div><p>The rapid advancement of new energy vehicle technologies has drawn significant attention to silicon-based anodes due to their exceptionally high theoretical capacity and environmental friendliness. However, the substantial volume expansion (approximately 300%) during lithiation often leads to structural fracture and pulverization, thereby deteriorating cycling stability. Recently, nano-Si–Cu composite anodes fabricated via laser micro-cladding and dealloying have demonstrated improved mechanical stability and excellent cyclic charge–discharge performance. Yet, the influence of composite anode parameters—such as initial porosity, initial Si–Cu volume ratio, and skeleton modulus including copper—on the overall modulus of the composite anode, as well as the corresponding fracture behavior in relation to modulus evolution, remains challenging to elucidate through experiments alone. In this work, a two-dimensional representative volume element and a composite anode–current collector model are developed for porous Si–Cu composite anodes. By integrating chemo-mechanical coupling theory with numerical simulations and mathematical modeling, we systematically investigate the contributions of various parameters to modulus evolution under the dual—and opposing—mechanisms of softening effect and mesostructural evolution, along with the fracture response of the composite anode to modulus changes. Results indicate that as the initial porosity and Si–Cu volume ratio increase, the effective modulus of the electrode decreases; however, beyond critical values (58% porosity and a volume ratio of 3.6), the fully lithiated modulus exhibits an increase. Similarly, when the skeleton modulus falls below a threshold of 110 GPa, an increase in the composite modulus is observed. Although a higher modulus suppresses bending curvature, it shifts the neutral plane toward the current collector, exacerbating surface crack propagation and leading to a notable rise in the stress intensity factor. This study elucidates the role of composite anode parameters in modulus evolution and the corresponding fracture behavior, providing a theoretical foundation for the structural optimization of high-capacity, long-life silicon-based composite anodes.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 10","pages":"1436 - 1448"},"PeriodicalIF":2.6,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149222726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Inertia-Amplified Nonlinear Absorber for Robust Pulse Mitigation in Lightweight Structures","authors":"Yi Yao,&nbsp;Mengxin He,&nbsp;Yat Sze Choy,&nbsp;Qian Ding","doi":"10.1007/s10338-026-00722-z","DOIUrl":"10.1007/s10338-026-00722-z","url":null,"abstract":"<div><p>As a passive control technique, vibration absorption typically requires a certain mass to achieve effective energy transfer and dissipation, which limits its application in lightweight structures. To address this challenge, a novel nonlinear vibration absorber is proposed that exploits translation-rotation coupling to achieve low-frequency vibration absorption while maintaining a low added mass. The dynamic equations of the system are derived using Lagrange's equations, and the nonlinear characteristics are analyzed both analytically and numerically. The frequency-response near equilibrium is obtained via the harmonic balance method, confirming the softening nonlinearity of the absorber. Numerical simulations based on a two-story host structure are conducted to analyze the response under different excitation levels, and its vibration absorption performance is verified. Comparative studies confirm that, for the same auxiliary mass, the proposed absorber achieves superior mitigation and robustness compared with a conventional tuned mass damper. Parameter optimization via the genetic algorithm further enhances performance and ensures robustness across various excitations. These findings highlight the potential of inertia-amplified nonlinear absorbers as a lightweight and reliable solution for pulse mitigation in engineering structures.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 4","pages":"455 - 465"},"PeriodicalIF":2.7,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Constitutive Theory and Finite Element Modeling for the Diffusion Behavior of Fiber-Reinforced Hydrogel Composites","authors":"Xiangchuan Nian,&nbsp;Qingsheng Yang,&nbsp;Junjun Shang,&nbsp;Wei Rao,&nbsp;Junjie Liu,&nbsp;Xia Liu","doi":"10.1007/s10338-026-00733-w","DOIUrl":"10.1007/s10338-026-00733-w","url":null,"abstract":"<div><p>This study presents a comprehensive transient modeling framework to characterize the stress-diffusion behavior of fiber-reinforced hydrogel composites. The proposed model introduces an intermediate configuration to effectively decouple swelling and elastic deformation, while employing Fick’s diffusion law to describe solvent transport within the hydrogel matrix. Unlike previous models, our model accounts for both highly nonlinear behavior and dispersibility of the fibers. We have developed a finite element implementation that incorporates diffusion effects, which has been successfully integrated into Abaqus through a user element subroutine. Numerical results demonstrate excellent agreement with both theoretical predictions and existing numerical solutions. Within this computational framework, we systematically investigate the stress-diffusion coupling in entanglement chain hydrogels and fiber-reinforced hydrogel composites. The parametric studies provide valuable insights into how key factors, including entanglement chain ratio, fiber content, stiffness, and distribution, govern the mechanical and mass transport properties of these materials. These findings elucidate the fundamental mechanisms behind the anisotropic mechanical and diffusion behavior observed in hydrogel systems and their composite variants.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 7","pages":"1012 - 1030"},"PeriodicalIF":2.6,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148613159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preface to the Special Issue on Celebrating the 130th Anniversary of Tianjin University","authors":"Yue-Sheng Wang,&nbsp;Liao-Liang Ke","doi":"10.1007/s10338-026-00746-5","DOIUrl":"10.1007/s10338-026-00746-5","url":null,"abstract":"","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 4","pages":"361 - 362"},"PeriodicalIF":2.7,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonlinear Creep Constitutive Model and Its Finite Element Implementation for Composite Solid Propellant with Aging and Damage","authors":"Shuaixing Feng,&nbsp;Zilong Han,&nbsp;Shaoxing Qu","doi":"10.1007/s10338-026-00739-4","DOIUrl":"10.1007/s10338-026-00739-4","url":null,"abstract":"<div><p>Assessing the long-term structural integrity of solid rocket motors during storage requires a thorough understanding of the complicated creep behavior of composite solid propellants, particularly the effects of material aging and damage progression. This paper systematically investigates the creep behavior of composite solid propellants considering the coupling effect of aging and damage. The objective is to establish a nonlinear creep constitutive model that can describe the entire creep process of composite solid propellants and to explore its implementation in finite element analysis. Firstly, crosslink density is used to characterize the aging process of the propellant, and a modified cumulative damage model is proposed to construct a nonlinear creep constitutive model that includes the coupling effect of aging and damage. In the experimental section, the basic principle to determine the crosslink density of the propellant using the swelling method is introduced, and model parameters are obtained from experimental data. Subsequently, a method is proposed to obtain the parameters of the damage evolution model through creep fracture experiments, and the accuracy of the proposed creep constitutive model is validated. Finally, based on the Abaqus finite element software, the finite element application of the constitutive model is implemented via the CREEP subroutine, and its effectiveness in propellant creep analysis is verified. The results indicate that the established constitutive model can effectively describe the creep process of composite solid propellants under different stress conditions, considering both aging effect and damage evolution. In engineering applications, this study provides important theoretical support for the analysis of aging, damage, and creep deformation of propellant grains in solid rocket motors under long-term storage conditions.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 10","pages":"1519 - 1528"},"PeriodicalIF":2.6,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149222769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review on Advances in Picosecond Laser Ultrasonics for Mechanics","authors":"Jinyu Yan,&nbsp;Lin’an Li,&nbsp;Yantao Zeng,&nbsp;Kai Chen,&nbsp;Lipan Xin,&nbsp;Shibin Wang,&nbsp;Zhiyong Wang,&nbsp;Chuanwei Li","doi":"10.1007/s10338-026-00743-8","DOIUrl":"10.1007/s10338-026-00743-8","url":null,"abstract":"<div><p>Picosecond laser ultrasonics (PLU) has emerged as a powerful non-destructive technique for characterizing the mechanical properties of materials at the nanoscale, providing unprecedented insights into key parameters such as elastic constants, film adhesion, and subsurface defects. This review provides a comprehensive overview of the advances in PLU for mechanical analysis. We begin with the fundamental principles of opto-acoustic generation and detection, discuss various technical methodologies, and then delve into its diverse applications in material properties characterization and non-destructive mechanical imaging. Finally, we discuss the current challenges and future prospects, highlighting the path toward industrial integration through automation and AI-driven analysis.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 4","pages":"388 - 401"},"PeriodicalIF":2.7,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Converse Flexoelectric Actuation of Dielectric Elastomeric Structures","authors":"Shuwen Zhang,&nbsp;Yanyu Li,&nbsp;Yifan Li,&nbsp;Shiwei Yang,&nbsp;Minglong Xu","doi":"10.1007/s10338-026-00704-1","DOIUrl":"10.1007/s10338-026-00704-1","url":null,"abstract":"<div><p>Converse flexoelectricity refers to the inverse of the flexoelectric effect, wherein an applied electric polarization or polarization gradient—generated through electric field non-uniformity or material anisotropy—induces compensating dipole moments. These moments stimulate mechanical deformation, thereby enabling actuation. This mechanism benefits from size dependence, compatibility with diverse dielectric materials, and opportunities for geometric and mechanical design. In this work, we investigate the converse flexoelectric effect in non-piezoelectric dielectric elastomers, using electric field non-uniformity to impose the polarization gradient. We explore how actuation performance relates to size dependence and geometric structures, confirming that flexoelectric actuation becomes dominant at small geometric scales. This study contributes to the development of flexoelectric actuation strategies by emphasizing the importance of geometry and structural design at small scales, as in MEMS and bio-engineering applications.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 6","pages":"822 - 831"},"PeriodicalIF":2.6,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}