Acta Mechanica Solida Sinica最新文献_第7页

A Visco-hyperelastic Constitutive Model for Temperature-Dependent Cyclic Deformation of Dielectric Elastomer 介电弹性体随温度循环变形的粘-超弹性构造模型

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-02-26 DOI: 10.1007/s10338-024-00463-x

Weiyang Huang, Kaijuan Chen, Pengyu Ma, Guozheng Kang

引用次数: 0

A Multiscale Model of Mass-Functionally Graded Beam-Fluid System Under Bending and Vibration Responses 弯曲和振动响应下质量-功能分级梁-流体系统的多尺度模型

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-02-23 DOI: 10.1007/s10338-023-00450-8

Lei Zhang, Jianping Lin, Jiaqing Jiang, Guannan Wang

{"title":"A Multiscale Model of Mass-Functionally Graded Beam-Fluid System Under Bending and Vibration Responses","authors":"Lei Zhang, Jianping Lin, Jiaqing Jiang, Guannan Wang","doi":"10.1007/s10338-023-00450-8","DOIUrl":"10.1007/s10338-023-00450-8","url":null,"abstract":"<div><p>In this paper, a multiscale model is developed for the mass functionally graded (FG) beam-fluid system to investigate its static and dynamic responses based on 3D printed porous beam free vibration tests, which are determined by two aspects. At the microstructural level, the gradient variation is realized by arbitrary distribution of matrix pores, and the effective moduli under specific distribution are obtained using the micromechanics homogenization theory. In the meantime, at the structural level, the mechanical responses of FG porous beams subjected to mass loading are considered in a static fluid environment. Then, the explicit expressions of local finite-element (FE) expressions corresponding to the static and dynamic responses are given in the appendices. The present results are validated against numerical and experimental results from the literature and mechanical tests of 3D printed structures, with good agreement generally obtained, giving credence to the present model. On this basis, a comprehensive parametric study is carried out, with a particular focus on the effects of boundary conditions, fluid density, and slenderness ratio on the bending and vibration of FG beams with several different gradations.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 2","pages":"327 - 340"},"PeriodicalIF":2.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139955518","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

Experimental Study on Mixed-Mode (I–II) Fracture Toughness of Freshwater Ice 淡水冰混合模式（I-II）断裂韧性实验研究

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-02-14 DOI: 10.1007/s10338-023-00458-0

Yaozhong Xu, Mao Zhou, Xian Yi, Wen Hua, Jiuzhou Huang, Wenyu Zhang, Shiming Dong

{"title":"Experimental Study on Mixed-Mode (I–II) Fracture Toughness of Freshwater Ice","authors":"Yaozhong Xu, Mao Zhou, Xian Yi, Wen Hua, Jiuzhou Huang, Wenyu Zhang, Shiming Dong","doi":"10.1007/s10338-023-00458-0","DOIUrl":"10.1007/s10338-023-00458-0","url":null,"abstract":"<div><p>In recent years, the issue of aircraft icing has gained widespread recognition. The breaking and detachment of dynamic ice can pose a threat to flight safety. However, the shedding and fracture mechanisms of dynamic ice are unclear and cannot meet the engineering needs of ice-shedding hazard assessment. Therefore, studying the fracture toughness of ice bodies has extremely important practical significance. To address this issue, this article uses a centrally cracked Brazilian disk (CCBD) specimen to measure the pure mode I toughness and pure mode II fracture toughness of freshwater ice at different loading rates. The mixed-mode (I–II) fracture characteristics of ice are discussed, and the experimental results are compared and analyzed with the theoretical values of the generalized maximum tangential stress (GMTS) criterion considering the influence of <i>T</i>-stress. The results indicated that as the loading rate increases, the pure mode I toughness and pure mode II fracture toughness of freshwater ice decrease, and the fracture toughness of freshwater ice is more sensitive to the loading rate. In terms of fracture criteria, the theoretical value of the ratio of pure mode II fracture toughness to pure mode I fracture toughness based on the GMTS criterion is in good agreement with the experimental value, while the theoretical value based on the maximum tangential stress (MTS) criterion deviates significantly from the experimental value, indicating that the GMTS criterion considering the influence of <i>T</i>-stress can better predict the experimental results.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 2","pages":"252 - 264"},"PeriodicalIF":2.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10338-023-00458-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139765332","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

Theoretical Analysis of the Buckling Behaviors of Inhomogeneous Shape Memory Polymer Composite Laminates Considering Prestrains 考虑预应变的非均质形状记忆聚合物复合层压板屈曲行为的理论分析

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-02-12 DOI: 10.1007/s10338-023-00454-4

Hanxing Zhao, Pengyu Cao, Fengfeng Li, Xin Lan, Liwu Liu, Yanju Liu, Jinsong Leng

引用次数: 0

Strange Nonchaotic Attractors in a Quasiperiodically Excited Slender Rigid Rocking Block with Two Frequencies 双频准周期激励纤细刚性摇摆块中的奇异非混沌吸引子

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-02-08 DOI: 10.1007/s10338-024-00464-w

Jinkai Jiang, Zhengdong Du

引用次数: 0

Surface Elastic Effects on Electromechanical Responses of a Piezoelectric Semiconducting Nanobeam 压电半导体纳米束的表面弹性效应对机电响应的影响

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-02-07 DOI: 10.1007/s10338-023-00459-z

Aowen Bao, Xiaobao Li, Yuxue Pu, Chunxiao Zhan

{"title":"Surface Elastic Effects on Electromechanical Responses of a Piezoelectric Semiconducting Nanobeam","authors":"Aowen Bao, Xiaobao Li, Yuxue Pu, Chunxiao Zhan","doi":"10.1007/s10338-023-00459-z","DOIUrl":"10.1007/s10338-023-00459-z","url":null,"abstract":"<div><p>Piezoelectric semiconductors (PSCs) find extensive applications in modern smart electronic devices because of their dual properties of being piezoelectric and semiconductive. With the increasing demand for miniaturization of these devices, the performance of their components needs to be carefully designed and optimized, especially when reduced to nanosize. It has been shown that surface elastic properties play a substantial role in the mechanical performance of nanoscale materials and structures. Building on this understanding, the surface elastic effects, encompassing surface residual stress, surface membrane stiffness, and surface bending stiffness, are comprehensively taken into account to explore the electromechanical responses of a PSC nanobeam. Additionally, the flexoelectric effect on their responses is also systematically studied. The results of this work reveal that surface elastic properties predominantly influence mechanical performance, while the flexoelectric effect plays a more dominant role in electric-related quantities at the nanoscale. Notably, the significance of surface bending rigidity, which was often underestimated in the earlier literature, is demonstrated. Furthermore, owing to the flexoelectric effect, the linear distribution of electric potential and charge carriers along the length transforms into a nonlinear pattern. The distributions of electric potential and charge carriers across the cross section are also evidently impacted. Moreover, the size-dependent responses are evaluated. Our findings may provide valuable insights for optimizing electronic devices based on nanoscale PSCs.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 4","pages":"598 - 612"},"PeriodicalIF":2.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139765328","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

Temperature-Dependent Tearing Behavior of Rubber Materials: Characterization and Modeling 橡胶材料随温度变化的撕裂行为：表征与建模

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-02-07 DOI: 10.1007/s10338-023-00462-4

Qinyuan Yao, Feilong Zhang, Pan Dong, Ziyuan Zhao, Yi He, Weiguo Li, Liming Chen

{"title":"Temperature-Dependent Tearing Behavior of Rubber Materials: Characterization and Modeling","authors":"Qinyuan Yao, Feilong Zhang, Pan Dong, Ziyuan Zhao, Yi He, Weiguo Li, Liming Chen","doi":"10.1007/s10338-023-00462-4","DOIUrl":"10.1007/s10338-023-00462-4","url":null,"abstract":"<div><p>With the increasingly widespread application of rubber in many fields, there is a growing demand for quantitative characterization of temperature-dependent mechanical properties in high-temperature service environments. The critical tearing energy is an important criterion for determining whether rubber materials will experience tearing instability, while tear strength is a key parameter for rubber materials to resist tearing. It is necessary to quantitatively characterize their evolution with temperature. Current theoretical research mainly relies on fitting a large amount of experimental data, which is not convenient for engineering applications. Therefore, in this work, a temperature-dependent critical tearing energy model is firstly developed based on the force-heat equivalence energy density principle. This model considers the equivalent relationship between the critical tearing energy required for crack instability propagation and the thermal energy stored in the rubber material. It is demonstrated that our model has higher prediction accuracy when compared to other models. Furthermore, combining with the Griffith fracture theory, temperature-dependent tear strength models applicable to three different crack modes are separately established. These models are validated using experimental data for Mode I opening cracks and Mode III tearing cracks, and good consistency is achieved. Additionally, a quantitative analysis of the influence of elastic modulus on tear strength at different temperatures is conducted. This work provides a reliable way for predicting temperature-dependent tearing instability behavior and offers beneficial suggestions for improving the tear strength of rubber materials at different temperatures.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 2","pages":"316 - 326"},"PeriodicalIF":2.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139765551","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

Adhesive Contact of Elastic Solids with Self-Affine Fractal Rough Surfaces 弹性固体与自细分形粗糙表面的粘着接触

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-02-07 DOI: 10.1007/s10338-023-00461-5

Xuan-Ming Liang, Shi-Wen Chen, Si-He Wang, Zhen-Yuan Gong, Jun Feng, Gang-Feng Wang

{"title":"Adhesive Contact of Elastic Solids with Self-Affine Fractal Rough Surfaces","authors":"Xuan-Ming Liang, Shi-Wen Chen, Si-He Wang, Zhen-Yuan Gong, Jun Feng, Gang-Feng Wang","doi":"10.1007/s10338-023-00461-5","DOIUrl":"10.1007/s10338-023-00461-5","url":null,"abstract":"<div><p>The elastic adhesive contact of self-affine fractal rough surfaces against a rigid flat is simulated using the finite element method. An array of nonlinear springs, of which the force-separation law obeys the Lennard–Jones potential, is introduced to account for the interfacial adhesion. For fractal rough surfaces, the interfacial interaction is generally attractive for large mean gaps, but turns repulsive as the gap continuously shrinks. The interfacial interactions at the turning point corresponding to the spontaneous contact are shown for various surfaces. For relatively smooth surfaces, the probability density distributions of repulsion and attraction are nearly symmetric. However, for rougher surfaces, the simulation results suggest a uniform distribution for attraction but a monotonously decreasing distribution with a long tail for repulsion. The pull-off force rises with increasing ratio of the work of adhesion to the equilibrium distance, whereas decreases for solids with a higher elastic modulus and a larger surface roughness. The current study will be helpful for understanding the adhesion of various types of rough solids.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 2","pages":"265 - 270"},"PeriodicalIF":2.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139765553","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

An Asynchronous Variational Integrator for Contact Problems Involving Elastoplastic Solids 弹塑性固体接触问题的异步变量积分器

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-02-01 DOI: 10.1007/s10338-023-00456-2

Zongwu Niu, Zixiao Wang, Yongxing Shen

{"title":"An Asynchronous Variational Integrator for Contact Problems Involving Elastoplastic Solids","authors":"Zongwu Niu, Zixiao Wang, Yongxing Shen","doi":"10.1007/s10338-023-00456-2","DOIUrl":"10.1007/s10338-023-00456-2","url":null,"abstract":"<div><p>Simulations of contact problems involving at least one plastic solid may be costly due to their strong nonlinearity and requirements of stability. In this work, we develop an explicit asynchronous variational integrator (AVI) for inelastic non-frictional contact problems involving a plastic solid. The AVI assigns each element in the mesh an independent time step and updates the solution at the elements and nodes asynchronously. This asynchrony makes the AVI highly efficient in solving such bi-material problems. Taking advantage of the AVI, the constitutive update is locally performed in one element at a time, and contact constraints are also enforced on only one element. The time step of the contact element is subdivided into multiple segments, and the fields are updated accordingly. During a contact event, only one element involving a few degrees of freedom is considered, leading to high efficiency. The proposed formulation is first verified with a pure elastodynamics benchmark and further applied to a contact problem involving an elastoplastic solid with non-associative volumetric hardening. The numerical results indicate that the AVI exhibits excellent energy behaviors and has high computational efficiency.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 2","pages":"305 - 315"},"PeriodicalIF":2.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139668828","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

The Mixed-Mode Fatigue Crack Propagation Model of Piezoelectric Materials Under Electric Fatigue Loading by the Jk-Integral 利用 Jk 积分建立压电材料在电疲劳载荷下的混合模式疲劳裂纹扩展模型

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-01-22 DOI: 10.1007/s10338-023-00455-3

Xianghua Chen, Chunguang Wang, Qun Li

{"title":"The Mixed-Mode Fatigue Crack Propagation Model of Piezoelectric Materials Under Electric Fatigue Loading by the Jk-Integral","authors":"Xianghua Chen, Chunguang Wang, Qun Li","doi":"10.1007/s10338-023-00455-3","DOIUrl":"10.1007/s10338-023-00455-3","url":null,"abstract":"<div><p>The electric fatigue load has a significant effect on the crack propagation behavior and failure life of piezoelectric materials and devices. In this paper, an electrical mixed-mode fatigue crack propagation model for piezoelectric materials is proposed based on the piezoelectric <i>J</i><sub><b><i>k</i></b></sub>-integral theory. The crack initiation, propagation, and life prediction criteria of piezoelectric materials under electric fatigue loading are given by this model, and the finite element simulation model is established to study the electrical mixed-mode crack propagation behavior of piezoelectric structures. Meanwhile, the electrical mixed-mode fatigue crack propagation model is applied to the fatigue crack propagation behavior of a piezoelectric typical defective structure, the crack–hole interference model. The mixed-mode crack propagation, fatigue life, and the interference behavior between the crack and hole at various hole locations of the crack–hole interference model are well recognized by this model. The crack propagation behavior under different electrical load intensities is also considered. The results show that the hole in front of the crack tip inhibits crack propagation to a certain extent, and the strength of electrical load affects the fatigue life of piezoelectric materials and structures. Therefore, the proposed electrical mixed-mode fatigue crack propagation model provides a reference for predicting the mixed-mode fatigue crack propagation behavior and fatigue life of piezoelectric structures under electric fatigue loading.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 4","pages":"634 - 641"},"PeriodicalIF":2.0,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139515936","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