European Journal of Mechanics A-Solids最新文献_第4页

A systematic finite element procedure for flexoelectric piezoelectric nanobeams using the asymptotic numerical method 用渐近数值方法对柔性压电纳米梁进行了系统的有限元分析

IF 4.4 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-04-26 DOI: 10.1016/j.euromechsol.2025.105679

S. Abdelkhalek , F. Najar

{"title":"A systematic finite element procedure for flexoelectric piezoelectric nanobeams using the asymptotic numerical method","authors":"S. Abdelkhalek , F. Najar","doi":"10.1016/j.euromechsol.2025.105679","DOIUrl":"10.1016/j.euromechsol.2025.105679","url":null,"abstract":"<div><div>Analysis of small-scale beam structures under the combined effects of flexoelectric and piezoelectric responses is of interest in this work. The problem is tackled by the derivation of a mixed finite element model accounting for geometric nonlinearity and large strains through a total Lagrangian representation, so that the von Karman strain can be considered. In addition, a Penalty method is introduced to account for higher order stress tensors. The asymptotic numerical method (ANM) is implemented for the first time in this context to deal with nonlinearities. To avoid tedious manual calculation of the ANM power series terms, a systematic procedure is proposed in this work with an application to a clamped–clamped nanobeam. The obtained model is applied for different flexoelectric-piezoelectric materials, and the results indicate that the applied electric voltage can lead to buckling of the beam. However, this instability is observed for negative voltages for some materials, and positive voltages for others, depending on a combination of flexoelectric and piezoelectric coefficients of the material.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"113 ","pages":"Article 105679"},"PeriodicalIF":4.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879461","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

Anisotropic elastic metamaterials for novel wave manipulation: a review 用于新型波操纵的各向异性弹性超材料：综述

IF 4.4 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-04-26 DOI: 10.1016/j.euromechsol.2025.105696

Jeseung Lee , Yoon Young Kim

引用次数: 0

Statistical chain-based model for predicting drug release from degradable hydrogels 基于统计链的可降解水凝胶药物释放预测模型

IF 4.4 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-04-25 DOI: 10.1016/j.euromechsol.2025.105699

Deep Malu , Dongjing He , Wenting Shi , M.G. Finn , Yuhang Hu

引用次数: 0

A semi-analytical method for determining homogenized relaxation times and moduli in Prony series of a heterogeneous viscoelastic material 确定非均质粘弹性材料的均质弛豫时间和模量的半解析方法

IF 4.4 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-04-25 DOI: 10.1016/j.euromechsol.2025.105683

Huilin Jia , Zifeng Yuan

{"title":"A semi-analytical method for determining homogenized relaxation times and moduli in Prony series of a heterogeneous viscoelastic material","authors":"Huilin Jia , Zifeng Yuan","doi":"10.1016/j.euromechsol.2025.105683","DOIUrl":"10.1016/j.euromechsol.2025.105683","url":null,"abstract":"<div><div>This work introduces a semi-analytical method to obtain homogenized relaxation times and moduli in terms of Prony series of a heterogeneous viscoelastic material. This can be treated as an extension of linear homogenization theory which calculates homogenized elastic properties of a heterogeneous elastic material. The heterogeneous viscoelastic material is consist of multiple phases where each phase is assumed as a standard-solid viscoelastic material. The idea of so-called reduced-order-homogenization method is introduced to propose a set of residual-free governing equations with respect to the averaged strains and eigenstrains of all the phases. The set of governing equations can be rewritten as a set of ordinary differential equations (ODEs), which can be solved analytically to obtain relationship between the phase strains and the macroscopic strains. The solution of the ODEs stems from an eigenvalue problem, where the eigenvalues are the homogenized relaxation times. In addition, the relaxation moduli can be evaluated through the ODEs as well. Accordingly, a homogenized viscoelastic material in term of Prony series can be determined. Four sets of numerical tests are proposed to verify the semi-analytical method: unit cell tests, tension tests on a plate with a hole, pure bending tests, and torsion tests. The results from these tests demonstrate a strong agreement between the homogenized model and direct numerical simulations. Additionally, we compared our model against experimental measurements, further confirming the accuracy and reliability of our proposed approach.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"113 ","pages":"Article 105683"},"PeriodicalIF":4.4,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886760","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

Bending mechanics of biomimetic scale plates 仿生尺度板的弯曲力学

IF 4.4 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-04-25 DOI: 10.1016/j.euromechsol.2025.105664

Pranta Rahman Sarkar , Hossein Ebrahimi , Md Shahjahan Hossain , Hessein Ali , Ranajay Ghosh

{"title":"Bending mechanics of biomimetic scale plates","authors":"Pranta Rahman Sarkar , Hossein Ebrahimi , Md Shahjahan Hossain , Hessein Ali , Ranajay Ghosh","doi":"10.1016/j.euromechsol.2025.105664","DOIUrl":"10.1016/j.euromechsol.2025.105664","url":null,"abstract":"<div><div>Dermal scale-inspired structures are a unique class of multi-material systems that can exhibit significant nonlinearity and evolving anisotropy, even in small strains. In this work, architecture–property relationships are derived for both synclastic and anticlastic curvatures of the plate using analytical modeling, finite elements, and experiments. The developed model outlines analytical relationships between geometry, deformation, and bending response of the system. The results show that, as the scales engage, both synclastic and anticlastic deformations show non-linear scale contact kinematics and cross-curvature sensitivity of moments, resulting in strong curvature-dependent elastic nonlinearity and emergent anisotropy. The anisotropy of bending rigidities and their evolution with curvatures are affected by both the direction and magnitude of bending, as well as scale geometry parameters, and their distribution on the substrate. Similar to earlier beam-like substrates, kinematic locked states were found to occur; however, their existence and evolution are also strongly determined by scale geometry and imposed cross-curvatures. This validated model helps us to quantify bending response, locking behavior, and their geometric dependence, paving the way for a deeper understanding of the nature of nonlinearity and anisotropy of these systems.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"113 ","pages":"Article 105664"},"PeriodicalIF":4.4,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143907944","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

A finite viscoelastic phase-field model for prediction of crack propagation speed in elastomers 弹性体裂纹扩展速度预测的有限粘弹性相场模型

IF 4.4 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-04-24 DOI: 10.1016/j.euromechsol.2025.105678

Jacopo Ciambella , Giovanni Lancioni , Nico Stortini

引用次数: 0

Wave propagation analysis of functionally graded bio-composite circular plates using an improved sinusoidal shear deformation theory resting on an advanced viscoelastic foundation 基于先进粘弹性基础的改进正弦剪切变形理论的功能梯度生物复合材料圆板波传播分析

IF 4.4 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-04-23 DOI: 10.1016/j.euromechsol.2025.105688

Mehran Safarpour , Hamed Safarpour , Omer Civalek

{"title":"Wave propagation analysis of functionally graded bio-composite circular plates using an improved sinusoidal shear deformation theory resting on an advanced viscoelastic foundation","authors":"Mehran Safarpour , Hamed Safarpour , Omer Civalek","doi":"10.1016/j.euromechsol.2025.105688","DOIUrl":"10.1016/j.euromechsol.2025.105688","url":null,"abstract":"<div><div>This study investigates the wave propagation characteristics of functionally graded (FG) bio-composite circular plates using an improved sinusoidal shear deformation theory (ISSDT) resting on an advanced viscoelastic substrate. FG bio-composites, composed of natural fibers and biodegradable matrices, offer superior mechanical performance with sustainability benefits, making them ideal for structural applications in aerospace, biomedical, and marine engineering. The ISSDT accounts for transverse shear deformation and thickness stretching effects, enhancing the accuracy of wave dispersion analysis. The governing equations are derived using Hamilton's principle and are solved via the harmonic differential quadrature method (HDQM) along with radial direction, ensuring computational efficiency and precision. The influence of material gradation, boundary conditions, and geometric parameters on phase velocities is examined in detail. The study reveals that increasing the volume fraction of bio-composite constituents significantly alters the wave characteristics, affecting both the fundamental and higher-order wave modes. Additionally, the inclusion of thickness stretching in the ISSDT leads to improved predictions compared to classical and higher-order shear deformation theories. The HDQM proves to be a robust numerical tool, efficiently handling the complex boundary conditions associated with circular FG plates. The findings provide valuable insights into the dynamic behavior of FG bio-composite structures, guiding their optimized design for vibration control and wave manipulation applications. This research contributes to the growing field of sustainable composite materials and advances the understanding of wave mechanics in FG bio-composites.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"112 ","pages":"Article 105688"},"PeriodicalIF":4.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870123","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

Optimal grading of elastic modulus at contact corners with friction with application in fibrillar adhesives 纤维胶粘剂中摩擦接触角弹性模量的最佳分级

IF 4.4 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-04-23 DOI: 10.1016/j.euromechsol.2025.105673

Shi-Wen Chen , Gang-Feng Wang , Michele Ciavarella

引用次数: 0

On the future of experimental mechanics in the digital world: An eikological perspective 论数字世界中实验力学的未来：一个生态学的视角

IF 4.4 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-04-22 DOI: 10.1016/j.euromechsol.2025.105654

François Hild, Stéphane Roux

引用次数: 0

Nonlinear vibration and stability of perovskite plates under multi-physics fields: Photothermal and photodielectric effects 多物理场下钙钛矿板的非线性振动与稳定性：光热和光介电效应

IF 4.4 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-04-22 DOI: 10.1016/j.euromechsol.2025.105687

Zhi Ni, Shaoyu Zhao, Jie Yang

{"title":"Nonlinear vibration and stability of perovskite plates under multi-physics fields: Photothermal and photodielectric effects","authors":"Zhi Ni, Shaoyu Zhao, Jie Yang","doi":"10.1016/j.euromechsol.2025.105687","DOIUrl":"10.1016/j.euromechsol.2025.105687","url":null,"abstract":"<div><div>Metal halide perovskites have attracted significant research interest in the fields of solar cells and optoelectronic devices. However, there are still many gaps in understanding their mechanical properties under multi-physics field conditions. This paper establishes an opto-electro-thermo-mechanical model for lead halide perovskite plates, accounting for photostriction, electrostriction, piezoelectricity, photothermal, and photodielectric effects, and investigates their nonlinear vibration, buckling, and postbuckling behaviors. The nonlinear governing equations are derived based on Mindlin-Reissner plate theory and von Kármán nonlinearity, and then numerically solved employing the differential quadrature method and direct iteration. Comprehensive parametric studies are conducted to explore the influence of multi-physics fields on the nonlinear vibration characteristics, buckling, and postbuckling behaviors of the perovskite plates. The numerical results demonstrate that the increase in light intensity and applied voltage leads to a decrease in nonlinear frequency, buckling load, and post-buckling equilibrium path, as well as an increase in the nonlinear frequency ratio. This suggests that a comprehensive understanding and incorporation of the opto-electro-thermo-mechanical multi-physics field effects in the analysis of perovskite structures is both essential and meaningful for the practical engineering applications of perovskites.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"113 ","pages":"Article 105687"},"PeriodicalIF":4.4,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874281","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