Acta Mechanica Solida Sinica最新文献_第6页

Giant Flexoelectric Effect in Snapping Surfaces Enhanced by Graded Stiffness 通过梯度刚度增强啪啪声表面的巨挠电效应

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-03-25 DOI: 10.1007/s10338-024-00475-7

Chuo Zhao

{"title":"Giant Flexoelectric Effect in Snapping Surfaces Enhanced by Graded Stiffness","authors":"Chuo Zhao","doi":"10.1007/s10338-024-00475-7","DOIUrl":"10.1007/s10338-024-00475-7","url":null,"abstract":"<div><p>Flexoelectricity is present in nonuniformly deformed dielectric materials and has size-dependent properties, making it useful for microelectromechanical systems. Flexoelectricity is small compared to piezoelectricity; therefore, producing a large-scale flexoelectric effect is of great interest. In this paper, we explore a way to enhance the flexoelectric effect by utilizing the snap-through instability and a stiffness gradient present along the length of a curved dielectric plate. To analyze the effect of stiffness profiles on the plate, we employ numerical parameter continuation. Our analysis reveals a nonlinear relationship between the effective electromechanical coupling coefficient and the gradient of Young’s modulus. Moreover, we demonstrate that the quadratic profile is more advantageous than the linear profile. For a dielectric plate with a quadratic profile and a modulus gradient of − 0.9, the effective coefficient can reach as high as 15.74 pC/N, which is over three times the conventional coupling coefficient of piezoelectric material. This paper contributes to our understanding of the amplification of flexoelectric effects by harnessing snapping surfaces and stiffness gradient design.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 4","pages":"528 - 540"},"PeriodicalIF":2.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10338-024-00475-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140300289","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

Analysis of Vibrational Properties of Horn-Shaped Magneto-Elastic Single-Walled Carbon Nanotube Mass Sensor Conveying Pulsating Viscous Fluid Using Haar Wavelet Technique 利用哈小波技术分析输送脉动粘性流体的喇叭形磁弹性单壁碳纳米管质量传感器的振动特性

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-03-25 DOI: 10.1007/s10338-023-00457-1

M. Mahaveer Sree Jayan, Lifeng Wang, R. Selvamani, N. Ramya

{"title":"Analysis of Vibrational Properties of Horn-Shaped Magneto-Elastic Single-Walled Carbon Nanotube Mass Sensor Conveying Pulsating Viscous Fluid Using Haar Wavelet Technique","authors":"M. Mahaveer Sree Jayan, Lifeng Wang, R. Selvamani, N. Ramya","doi":"10.1007/s10338-023-00457-1","DOIUrl":"10.1007/s10338-023-00457-1","url":null,"abstract":"<div><p>This research explores the dynamic behaviour of horn-shaped single-walled carbon nanotubes (HS-SWCNTs) conveying viscous nanofluid with pulsating the influence of a longitudinal magnetic field. The analysis utilizes Euler–Bernoulli beam model, considering the variable cross section, and incorporating Eringen’s nonlocal theory to formulate the governing partial differential equation of motion. The instability domain of HS-SWCNTs is estimated using Galerkin’s approach. Numerical analysis is performed using the Haar wavelet method. The critical buckling load obtained in this study is compared with previous research to validate the proposed model. The results highlight the effectiveness of the proposed model in assessing the vibrational characteristics of a complex multi-physics system involving HS-SWCNTs. Dispersion graphs and tables are presented to visualize the numerical findings pertaining to various system parameters, including the nonlocal parameter, magnetic flux, Knudsen number, and viscous factor.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 5","pages":"685 - 699"},"PeriodicalIF":2.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140300290","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

Pullout of the Cylindrical Helicoidal Fiber 圆柱螺旋形光纤的拉出

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-03-19 DOI: 10.1007/s10338-024-00470-y

Chenhan Hu, Weihao Tao, Hongjun Yu, Qinghua Qin, Jianshan Wang

引用次数: 0

Isogeometric Analysis for the Arbitrary AFG Microbeam with Two-Phase Nonlocal Stress-Driven Model 利用两相非局部应力驱动模型对任意 AFG 微梁进行等距分析

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-03-18 DOI: 10.1007/s10338-024-00467-7

Pei-Liang Bian, Zhaowei Liu, Hai Qing, Tiantang Yu

引用次数: 0

Probabilistic Fatigue Life Framework of Notched Specimens Based on the Weibull Distribution Under Multiaxial Loading 多轴载荷下基于威布尔分布的缺口试样疲劳寿命概率框架

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-03-14 DOI: 10.1007/s10338-024-00472-w

Jie Wang, Jianhui Liu, Jumei Lu, Yingbao He, Xuemei Pan, Ziyang Zhang

{"title":"Probabilistic Fatigue Life Framework of Notched Specimens Based on the Weibull Distribution Under Multiaxial Loading","authors":"Jie Wang, Jianhui Liu, Jumei Lu, Yingbao He, Xuemei Pan, Ziyang Zhang","doi":"10.1007/s10338-024-00472-w","DOIUrl":"10.1007/s10338-024-00472-w","url":null,"abstract":"<div><p>In engineering applications, the notch effect and size effect significantly influence the evaluation of fatigue performance in components, necessitating special attention in life prediction. This study proposes a new probabilistic model, based on the theory of critical distance (TCD), to predict fatigue life, with the aim of quantitatively assessing the impact of notch effect and size effect. The stress distribution on the critical plane is first characterized using a sixth-order multinomial function, and the relative stress gradient function is utilized to calculate the value of the critical distance. Furthermore, the effect of the ratio of shear strain to normal strain on fatigue life under multiaxial loading is considered. Additionally, the integration of the Weibull distribution into the TCD is employed for conducting probabilistic modeling of fatigue life. Finally, fatigue experiments are conducted on notched specimens of Q355D steel, demonstrating that the life prediction results under 50% survival probability are superior to the traditional TCD method.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 5","pages":"673 - 684"},"PeriodicalIF":2.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140156942","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

Micromechanics of Thermal Conductive Composites: Review, Developments and Applications 导热复合材料的微观力学：回顾、发展与应用

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-03-12 DOI: 10.1007/s10338-024-00469-5

Guannan Wang, Yulin Huang, Mengyuan Gao, Qiang Chen

{"title":"Micromechanics of Thermal Conductive Composites: Review, Developments and Applications","authors":"Guannan Wang, Yulin Huang, Mengyuan Gao, Qiang Chen","doi":"10.1007/s10338-024-00469-5","DOIUrl":"10.1007/s10338-024-00469-5","url":null,"abstract":"<div><p>Micromechanics investigations of composites with fiber-shaped reinforcement are extensively applied in the engineering design and theoretical analysis of thermal composites in the aerospace engineering and high-tech industry. In this paper, a critical review of various classical micromechanics approaches is provided based on the classification framework and the development of micromechanics tools. Several numerical micromechanics tools have been developed to overcome limitations through exactly/approximately solving the internal governing equations of microstructures. The connections and limitations of those models are also investigated and discussed, based on which three recently developed numerical or semi-analytical models are explained, including finite-element micromechanics, finite-volume direct averaging micromechanics, and locally exact homogenization theory, as well as machine learning tools. Since it is almost inevitable to mention the interfacial effects on thermal behavior of fibrous composites, we review the new mathematical relations that interrupt the original continuity conditions due to the existence of interphase/interface within unit cells. Generally speaking, the interphase/interface is demonstrated to play a significant role in influencing the effective coefficients and localized thermal fields. The present work also briefly reviews the application of micromechanics tools in emerging engineered woven composites, natural fibrous composites, and ablative thermal protection composites. It is demonstrated that sophisticated micromechanics tools are always demanded for investigating the effective and localized responses of thermal fibrous composites.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 2","pages":"215 - 237"},"PeriodicalIF":2.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140126689","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

Phase-Field Modeling of Thermal Fracture and Shear Heating in Rocks with Degraded Thermal Conductivity Across Crack 跨裂缝导热性退化岩石中热断裂和剪切加热的相场建模

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-03-11 DOI: 10.1007/s10338-023-00452-6

Tao You, Qizhi Zhu, Weijian Li, Jianfu Shao

引用次数: 0

Exploring the Effect of Plasticity on the Phase Imaging of TM-AFM Through Molecular Dynamics Simulations 通过分子动力学模拟探索可塑性对 TM-AFM 相位成像的影响

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-03-01 DOI: 10.1007/s10338-024-00468-6

Guolin Liu, Yu Zeng, Yaxin Chen, Zheng Wei

{"title":"Exploring the Effect of Plasticity on the Phase Imaging of TM-AFM Through Molecular Dynamics Simulations","authors":"Guolin Liu, Yu Zeng, Yaxin Chen, Zheng Wei","doi":"10.1007/s10338-024-00468-6","DOIUrl":"10.1007/s10338-024-00468-6","url":null,"abstract":"<div><p>In the tapping-mode atomic force microscope (TM-AFM), the probe tip continuously taps the sample surface, which may cause plastic deformation of the sample and result in energy dissipation. The energy dissipation of the probe is closely related to the scanned phase image. To quantify the energy dissipation due to plastic indentations of the sample, this study utilized a combination of molecular dynamics (MD) simulations and experiments on single-crystal copper samples, including multiple nano-indentation tests. The energy dissipation of the probe due to the plastic deformation of the sample was calculated by integrating the hysteresis curve of the indentation depth versus the force applied to the indenter. The simulation results are in good agreement with the experimental ones. Both sets of results have demonstrated that the plastic energy dissipation decreases as the number of indentations increases, and eventually the energy of the probe tends to stabilize. This equilibrium energy dissipation is associated with other dissipation mechanisms. Furthermore, it was observed that, after hundreds of taps, the dissipated energy of plastic deformation could be ignored, implying that the scanned image may not reflect the plasticity information of the sample after multiple taps of the probe on the sample surface for scanning.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 2","pages":"297 - 304"},"PeriodicalIF":2.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140002400","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

Adhesion Performances Between Two Orthotropic Solids Influenced by Temperature Increment 温度升高对两种各向同性固体之间粘合性能的影响

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-02-27 DOI: 10.1007/s10338-024-00465-9

Qing-Hui Luo, Yue-Ting Zhou

{"title":"Adhesion Performances Between Two Orthotropic Solids Influenced by Temperature Increment","authors":"Qing-Hui Luo, Yue-Ting Zhou","doi":"10.1007/s10338-024-00465-9","DOIUrl":"10.1007/s10338-024-00465-9","url":null,"abstract":"<div><p>The classical adhesive contact models belong to isothermal adhesion theories, where the effect of temperature on adhesion was neglected. However, a number of experimental results indicated that the adhesion behaviors can be significantly affected by temperature. In this paper, the two-dimensional non-slipping anisothermal adhesion behaviors between two orthotropic elastic cylinders are investigated within the framework of the Johnson–Kendall–Roberts theory. The stated problem is reduced to the coupled singular integral equations by virtue of the Fourier integral transform, which are solved analytically with the analytical function theory. The closed-form solutions for the stress fields in the presence of thermoelastic effect are obtained. The stable equilibrium state of contact system is determined by virtue of the Griffith energy balance. The effect of temperature difference on adhesion behaviors between orthotropic solids is discussed. It is found that the difference between the oscillatory and non-oscillatory solutions increases with increasing the degree of anisotropy of orthotropic materials. The oscillatory solution cannot be well approximated by the non-oscillatory solution for the orthotropic materials with relatively high anisotropy.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"37 3","pages":"430 - 443"},"PeriodicalIF":2.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139981531","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

A Review on the Mullins Effect in Tough Elastomers and Gels 韧性弹性体和凝胶中的穆林效应综述

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-02-26 DOI: 10.1007/s10338-023-00460-6

Lin Zhan, Shaoxing Qu, Rui Xiao

引用次数: 0