Acta Mechanica Solida Sinica最新文献_第3页

Preface to the Special Issue in Celebration of Professor Shouwen Yu’s 85th Birthday 庆祝余寿文教授 85 岁诞辰特刊序言

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-07-03 DOI: 10.1007/s10338-024-00496-2

Xi-Qiao Feng, Qunyang Li

引用次数: 0

Effect of Tacticity on the Dynamic Response of Chiral Mechanical Metamaterials 手性对手性机械超材料动态响应的影响

IF 2.2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-07-01 DOI: 10.1007/s10338-024-00505-4

Pengcheng Zhao, Zhigang Wang, Xiaojun Zhu, Tingting Wang, Kai Zhang

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Hysteresis Analysis on Origami Energy Dissipation Braces with Local Miura Units 带有局部三浦单元的折纸消能支架的滞后分析

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-06-28 DOI: 10.1007/s10338-024-00503-6

Ya Zhou, Xu Li, Yuting Zhang, Jian Feng, Jianguo Cai

{"title":"Hysteresis Analysis on Origami Energy Dissipation Braces with Local Miura Units","authors":"Ya Zhou, Xu Li, Yuting Zhang, Jian Feng, Jianguo Cai","doi":"10.1007/s10338-024-00503-6","DOIUrl":"10.1007/s10338-024-00503-6","url":null,"abstract":"<div><p>A local design scheme for origami energy dissipation braces was proposed by combining local Miura units at both ends and a straight segment in the middle. This design was implemented to address the issue of uneven axial stiffness observed in global origami braces. Globally and locally designed origami braces were simulated and compared under cyclic loading to validate the advantages of the proposed design scheme in terms of hysteretic properties. Additionally, an analysis was conducted on the designed braces with varying straight segment lengths, geometric angles, and origami plate thicknesses for comparison. Results indicate that the local design significantly increases the tensile bearing load, enhances the anti-buckling capability, and improves the energy dissipation performance compared to the global design. The positive impact on bearing capacity and energy dissipation performance was observed with increased straight segment length, geometric angles, and origami plate thickness. However, excessively large parameter values result in brace buckling under compression, diminishing energy dissipation capacity.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141511754","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}

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Enhanced Flexoelectricity in Barium Titanate-Cellulose Composite Thin Films 增强钛酸钡-纤维素复合薄膜的柔电性能

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-06-26 DOI: 10.1007/s10338-024-00493-5

Wensi Xing, Hongyu Cao, Xin Zhang, Xu Liang, Jianwei Song, Shengping Shen

{"title":"Enhanced Flexoelectricity in Barium Titanate-Cellulose Composite Thin Films","authors":"Wensi Xing, Hongyu Cao, Xin Zhang, Xu Liang, Jianwei Song, Shengping Shen","doi":"10.1007/s10338-024-00493-5","DOIUrl":"10.1007/s10338-024-00493-5","url":null,"abstract":"<div><p>Biopolymers, the potential flexoelectric materials, are environment-friendly, degradable, lightweight, cost-effective, and possess remarkable processing properties catering to the requirements of advanced devices. However, the flexoelectric coefficient of biopolymers is normally much weaker than that of ceramic materials, limiting their potential applications for designing high-performance green electromechanical coupling devices. To improve the flexoelectric response in biopolymers, we composited barium titanate (BTO) with 2,2,6,6-tetramethylpiperidine-1-oxyl -oxidized cellulose nanofibrils (TOCNF) to enhance the flexoelectric response of TOCNF. Owing to the high permittivity and flexoelectric effect of BTO, the relative dielectric constant and flexoelectric coefficient of 33.3 wt% BTO-TOCNF films reached 30.94 @ 1 kHz and 50.05 ± 1.88 nC/m @ 1 Hz, which were almost 172 times and 27 times higher than those of TOCNF, respectively. The composite thin film contains high dielectric constant and flexoelectric coefficient, as well as excellent flexibility. Our study provided a straightforward and efficient method for improving the flexoelectric effect of biopolymers, and demonstrated its great potential applications in flexoelectric-based devices.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141511824","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}

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Preface to the “Theory and Applications of Flexoelectricity” Special Issue of Acta Mechanica Solida Sinica Mechanica Solida Sinica》"柔电理论与应用 "特刊序言

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-06-19 DOI: 10.1007/s10338-024-00499-z

Qian Deng, Yue Zheng, Shengping Shen

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Total Internal Reflection (TIR) Behavior of Heterogeneous Interface Shear Waves in Layered Soft Structure 层状软结构中异质界面剪切波的全内反射 (TIR) 行为

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-06-18 DOI: 10.1007/s10338-024-00497-1

Ming Zhao, Wentao Jiang, Qingyuan Wang, Ying Liang, Haidong Fan, Xiaobao Tian

{"title":"Total Internal Reflection (TIR) Behavior of Heterogeneous Interface Shear Waves in Layered Soft Structure","authors":"Ming Zhao, Wentao Jiang, Qingyuan Wang, Ying Liang, Haidong Fan, Xiaobao Tian","doi":"10.1007/s10338-024-00497-1","DOIUrl":"10.1007/s10338-024-00497-1","url":null,"abstract":"<div><p>The total internal reflection (TIR) behavior of interface shear waves is crucial for ensuring the reliability of dielectric elastomer (DE) devices. However, due to the complex force-electric coupling and large deformation of DEs, the TIR behavior of shear waves in heterogeneous force-electric interface models is still unclear. This study modeled an elastic/DE bi-material interface to analyze the trajectory of out-of-plane shear waves. Employing Dorfmann and Ogden’s nonlinear electroelastic framework and the related linear small incremental motion theory, a method has been developed to control the TIR behavior of interface shear waves. It has been found that the TIR behavior is significantly influenced by the strain-stiffening effect induced by biasing fields. Consequently, a biasing field principle involving preset electric displacement and pre-stretch has been proposed for TIR occurrence. By controlling the pre-stretch and preset electric displacement, active regulation of TIR behavior can be achieved. These results suggest a potential method for achieving autonomous energy shielding to improve the reliability of DE devices.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141511825","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}

引用次数: 0

Size and Interface Effects on Tensile Strength of Polymers with Nano/Micro Particle Inclusions 尺寸和界面对含有纳米/微粒夹杂物的聚合物拉伸强度的影响

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-06-12 DOI: 10.1007/s10338-024-00498-0

R. Yuan, X. Ma, L. H. Liang, Y. Wei

{"title":"Size and Interface Effects on Tensile Strength of Polymers with Nano/Micro Particle Inclusions","authors":"R. Yuan, X. Ma, L. H. Liang, Y. Wei","doi":"10.1007/s10338-024-00498-0","DOIUrl":"10.1007/s10338-024-00498-0","url":null,"abstract":"<div><p>Polymers with particle inclusions have wide applications, and the mechanical properties of polymer composites affect their reliability in service. The strength of these composites is dependent on factors such as particle fraction, size, distribution, and interface interaction between the two phases, in addition to the properties of the polymers and particles. The size effect of particles and interface damage play an important role and thus draw considerable attention. In this paper, the size- and interface-dependent strength of polypropylene (PP) with nano/micro silica (SiO<sub>2</sub>) particles of different fractions is studied through a combination of tensile experiments on a series of samples and corresponding three-dimensional (3D) finite element modeling. The results indicate that PP with 2% SiO<sub>2</sub> nanoparticles of 50 nm exhibits relatively higher tensile strength, shedding light on the microstructure mechanism where smaller particle sizes lead to better interface bonding. Furthermore, the particle size and interface coupling effect is analyzed based on the size-dependent elastic modulus model and the interface-cohesive model. The simulation demonstrates the local interface damage evolution around a particle of the composites in tension. These findings are beneficial for designing polymer composites with nanoparticle inclusions.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141350696","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}

引用次数: 0

Linear and Nonlinear Formulation of Phase Field Model with Generalized Polynomial Degradation Functions for Brittle Fractures 带有广义多项式退化函数的脆性断裂相场模型的线性和非线性公式化

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-06-11 DOI: 10.1007/s10338-024-00501-8

Ala Tabiei, Li Meng

{"title":"Linear and Nonlinear Formulation of Phase Field Model with Generalized Polynomial Degradation Functions for Brittle Fractures","authors":"Ala Tabiei, Li Meng","doi":"10.1007/s10338-024-00501-8","DOIUrl":"10.1007/s10338-024-00501-8","url":null,"abstract":"<div><p>The classical phase field model has wide applications for brittle materials, but nonlinearity and inelasticity are found in its stress–strain curve. The degradation function in the classical phase field model makes it a linear formulation of phase field and computationally attractive, but stiffness reduction happens even at low strain. In this paper, generalized polynomial degradation functions are investigated to solve this problem. The first derivative of degradation function at zero phase is added as an extra constraint, which renders higher-order polynomial degradation function and nonlinear formulation of phase field. Compared with other degradation functions (like algebraic fraction function, exponential function, and trigonometric function), this polynomial degradation function enables phase in [0, 1] (should still avoid the first derivative of degradation function at zero phase to be 0), so there is no <span>(Gamma )</span> convergence problem. The good and meaningful finding is that, under the same fracture strength, the proposed phase field model has a larger length scale, which means larger element size and better computational efficiency. This proposed phase field model is implemented in LS-DYNA user-defined element and user-defined material and solved by the Newton–Raphson method. A tensile test shows that the first derivative of degradation function at zero phase does impact stress–strain curve. Mode I, mode II, and mixed-mode examples show the feasibility of the proposed phase field model in simulating brittle fracture.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10338-024-00501-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141360240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Size-Dependent Analysis of Piezoelectric–Elastic Bilayer Microbeams Based on General Strain Gradient Theory 基于一般应变梯度理论的压电弹性双层微梁尺寸依赖性分析

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-06-06 DOI: 10.1007/s10338-024-00492-6

Kanghui Wu, Shenjie Zhou, Zhenjie Zhang, Juanjuan Li

{"title":"Size-Dependent Analysis of Piezoelectric–Elastic Bilayer Microbeams Based on General Strain Gradient Theory","authors":"Kanghui Wu, Shenjie Zhou, Zhenjie Zhang, Juanjuan Li","doi":"10.1007/s10338-024-00492-6","DOIUrl":"10.1007/s10338-024-00492-6","url":null,"abstract":"<div><p>The classical piezoelectric theory fails to capture the size-dependent electromechanical coupling behaviors of piezoelectric microstructures due to the lack of material length-scale parameters. This study presents the constitutive relations of a piezoelectric material in terms of irreducible transversely isotropic tensors that include material length-scale parameters. Using these relations and the general strain gradient theory, a size-dependent bending model is proposed for a bilayer cantilever microbeam consisting of a transversely isotropic piezoelectric layer and an isotropic elastic layer. Analytical solutions are provided for bilayer cantilever microbeams subjected to force load and voltage load. The proposed model can be simplified to the model incorporating only partial strain gradient effects. This study examines the effect of strain gradient by comparing the normalized electric potentials and deflections of different models. Numerical results show that the proposed model effectively captures size effects in piezoelectric microbeams, whereas simplified models underestimate size effects due to ignoring partial strain gradient effects.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141379373","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}

引用次数: 0

Kinematic Shakedown Analysis for Strain-Hardening Plates with the C1 Nodal Natural Element Method 采用 C1 节点自然要素法对应变硬化板进行运动振动分析

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-05-28 DOI: 10.1007/s10338-024-00483-7

Shutao Zhou, Xiaohui Wang, Yatang Ju

{"title":"Kinematic Shakedown Analysis for Strain-Hardening Plates with the C1 Nodal Natural Element Method","authors":"Shutao Zhou, Xiaohui Wang, Yatang Ju","doi":"10.1007/s10338-024-00483-7","DOIUrl":"10.1007/s10338-024-00483-7","url":null,"abstract":"<div><p>This paper proposes a novel numerical solution approach for the kinematic shakedown analysis of strain-hardening thin plates using the C<sup>1</sup> nodal natural element method (C<sup>1</sup> nodal NEM). Based on Koiter’s theorem and the von Mises and two-surface yield criteria, a nonlinear mathematical programming formulation is constructed for the kinematic shakedown analysis of strain-hardening thin plates, and the C<sup>1</sup> nodal NEM is adopted for discretization. Additionally, König’s theory is used to deal with time integration by treating the generalized plastic strain increment at each load vertex. A direct iterative method is developed to linearize and solve this formulation by modifying the relevant objective function and equality constraints at each iteration. Kinematic shakedown load factors are directly calculated in a monotonically converging manner. Numerical examples validate the accuracy and convergence of the developed method and illustrate the influences of limited and unlimited strain-hardening models on the kinematic shakedown load factors of thin square and circular plates.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170375","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}

引用次数: 0