Acta Mechanica Solida Sinica最新文献_第6页

Adhesion of 2D Materials: Measurement and Modulation 二维材料的附着力：测量和调制

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-11-11 DOI: 10.1007/s10338-024-00552-x

Na Li, Hongrong Wu, Changwei Sun, Junhua Zhao

{"title":"Adhesion of 2D Materials: Measurement and Modulation","authors":"Na Li, Hongrong Wu, Changwei Sun, Junhua Zhao","doi":"10.1007/s10338-024-00552-x","DOIUrl":"10.1007/s10338-024-00552-x","url":null,"abstract":"<div><p>Two-dimensional (2D) materials are promising for next-generation electronic devices and systems due to their unique physical properties. The interfacial adhesion plays a vital role not only in the synthesis, transfer and manipulation of 2D materials but also in the manufacture, integration and performance of the functional devices. However, the atomic thickness and limited lateral dimensions of 2D materials make the accurate measurement and modulation of their interfacial adhesion energy challenging. In this review, the recent advances in the measurement and modulation of the interfacial adhesion properties of 2D materials are systematically combed. Experimental methods and relative theoretical models for the adhesion measurement of 2D materials are summarized, with their scope of application and limitations discussed. The measured adhesion energies between 2D materials and various substrates are described in categories, where the typical adhesion modulation strategies of 2D materials are also introduced. Finally, the remaining challenges and opportunities for the interfacial adhesion measurement and modulation of 2D materials are presented. This paper provides guidance for addressing the adhesion issues in devices and systems involving 2D materials.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 2","pages":"252 - 274"},"PeriodicalIF":2.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786529","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

Modeling of Coupling Between Free Volume Evolution and Diffusion in Silicon Electrodes of Lithium-Ion Batteries 锂离子电池硅电极自由体积演化与扩散耦合建模

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-11-08 DOI: 10.1007/s10338-024-00551-y

Kai Zhang, Junwu Zhou, Yinan He, Bailin Zheng, Yong Li

{"title":"Modeling of Coupling Between Free Volume Evolution and Diffusion in Silicon Electrodes of Lithium-Ion Batteries","authors":"Kai Zhang, Junwu Zhou, Yinan He, Bailin Zheng, Yong Li","doi":"10.1007/s10338-024-00551-y","DOIUrl":"10.1007/s10338-024-00551-y","url":null,"abstract":"<div><p>Silicon, a leading candidate for electrode material for lithium-ion batteries, has garnered significant attention. During the initial lithiation process, the alloying reaction between silicon and lithium transforms the pristine silicon microstructure from crystalline to amorphous, resulting in plastic deformation of the amorphous phase. This study proposes the free volume theory to develop a fully coupled Cahn–Hilliard phase-field model that integrates viscoplastic deformation, free volume evolution, and diffusion. This model investigates the chemophysical phenomenon of self-limiting behavior occurring during the initial lithiation of silicon anodes. Unlike most existing models, the proposed model considers free volume-dependent diffusion using a physically-based approach. The model’s temporal variation in the lithiated phase thickness aligns well with experimental results, confirming the model’s accuracy. Stress field calculations reveal the coexistence of compressive and tensile stresses within the lithiated phase, which may not cause the limiting effect under the frame of the stress-induced diffusion. Analyses indicate that high effective stress increases free volume, enhancing lithium diffusion and augmenting the diffusion coefficient. Reducing the diffusion coefficient in the lithiated phase due to free volume evolution is the primary cause of self-limiting lithiation.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 3","pages":"459 - 469"},"PeriodicalIF":2.7,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163457","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

Thermal Torsion Effect of Twisted Polymer Actuators 扭曲聚合物致动器的热扭转效应

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-11-04 DOI: 10.1007/s10338-024-00547-8

Jiongjiong Hu, Lei Liu, Hao Liu, Dabiao Liu

{"title":"Thermal Torsion Effect of Twisted Polymer Actuators","authors":"Jiongjiong Hu, Lei Liu, Hao Liu, Dabiao Liu","doi":"10.1007/s10338-024-00547-8","DOIUrl":"10.1007/s10338-024-00547-8","url":null,"abstract":"<div><p>Twisted polymer artificial muscles activated by thermal heating represent a new class of soft actuators capable of generating torsional actuation. The thermal torsion effect, characterized by the reversible untwisting of twisted fibers as temperature increases due to greater radial than axial thermal expansion, is crucial to the actuation performance of these artificial muscles. This study explores the thermal torsion effect of polymer muscles made of twisted Nylon 6 fibers in experimental and theoretical aspects, focusing on the interplay between material properties and temperature. It is revealed that the thermal torsion effect enhances the actuation performance of the twisted polymer actuator while the thermal softening effect diminishes it. A thermal–mechanical model incorporating both the thermal torsion effect and thermal softening effect is used to predict the recovered torque of the twisted polymer actuators. An optimal bias angle and operating temperature are identified to maximize the recovered torque. Analysis of strain and stress distributions in the cross-section of the twisted polymer fiber shows that the outer layers of the fiber predominantly contribute to the torsional actuation. This work aids in the precise control and structural optimization of the thermally-activated twisted polymer actuators.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 2","pages":"320 - 330"},"PeriodicalIF":2.0,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786510","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

Data-Enhanced Low-Cycle Fatigue Life Prediction Model Based on Nickel-Based Superalloys 基于数据增强的镍基高温合金低周疲劳寿命预测模型

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-11-04 DOI: 10.1007/s10338-024-00541-0

Luopeng Xu, Lei Xiong, Rulun Zhang, Jiajun Zheng, Huawei Zou, Zhixin Li, Xiaopeng Wang, Qingyuan Wang

{"title":"Data-Enhanced Low-Cycle Fatigue Life Prediction Model Based on Nickel-Based Superalloys","authors":"Luopeng Xu, Lei Xiong, Rulun Zhang, Jiajun Zheng, Huawei Zou, Zhixin Li, Xiaopeng Wang, Qingyuan Wang","doi":"10.1007/s10338-024-00541-0","DOIUrl":"10.1007/s10338-024-00541-0","url":null,"abstract":"<div><p>To overcome the challenges of limited experimental data and improve the accuracy of empirical formulas, we propose a low-cycle fatigue (LCF) life prediction model for nickel-based superalloys using a data augmentation method. This method utilizes a variational autoencoder (VAE) to generate low-cycle fatigue data and form an augmented dataset. The Pearson correlation coefficient (PCC) is employed to verify the similarity of feature distributions between the original and augmented datasets. Six machine learning models, namely random forest (RF), artificial neural network (ANN), support vector machine (SVM), gradient-boosted decision tree (GBDT), eXtreme Gradient Boosting (XGBoost), and Categorical Boosting (CatBoost), are utilized to predict the LCF life of nickel-based superalloys. Results indicate that the proposed data augmentation method based on VAE can effectively expand the dataset, and the mean absolute error (MAE), root mean square error (RMSE), and R-squared (R<sup>2</sup>) values achieved using the CatBoost model, with respective values of 0.0242, 0.0391, and 0.9538, are superior to those of the other models. The proposed method reduces the cost and time associated with LCF experiments and accurately establishes the relationship between fatigue characteristics and LCF life of nickel-based superalloys.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 4","pages":"612 - 623"},"PeriodicalIF":2.7,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923201","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

Stress Waves Propagation Along the Frictional Interface with a Micro-contact 应力波沿微接触摩擦界面的传播

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-10-30 DOI: 10.1007/s10338-024-00540-1

Lingyan Shen, Yonggui Liu, Keyan Li, Xiaofei Ji, Xiangyu Jin

{"title":"Stress Waves Propagation Along the Frictional Interface with a Micro-contact","authors":"Lingyan Shen, Yonggui Liu, Keyan Li, Xiaofei Ji, Xiangyu Jin","doi":"10.1007/s10338-024-00540-1","DOIUrl":"10.1007/s10338-024-00540-1","url":null,"abstract":"<div><p>The stress wave profile at the frictional interface is crucial for investigating the frictional process. This study modeled a brittle material interface with a micro- contact to analyze the fine stress wave structure associated with frictional slip. Employing the finite element simulation alongside the related wave theory and experiments, two new wave structures were indentified: A Mach cone symmetric to the frictional interface associated with incident plane wave propagation, and a new plane longitudinal wave generated across the entire frictional interface at the moment when the incident wave began to propagate. The time and space of its appearance implies that the overall response of the frictional interface precedes the local wave response of the medium. Consequently, a model involving characteristic line theory and the idea of Green’s function has been proposed for its occurrence. The analysis results show that these two new wave phenomena are independent of the fracture of micro-contacts at the interface; instead, the frictional interface effect may be responsible for the generation of such new wave structures. The measured wave profiles provide a proof for the existence of the new wave structures. These results display new wave phenomena, and suggest a wave profile for investigating the dynamic mechanical properties of the frictional interface.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 1","pages":"152 - 165"},"PeriodicalIF":2.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10338-024-00540-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431024","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

Design Insights for Bilayer Electrode Batteries in In-Situ Curvature Measurement Based upon Mechanical-Electrochemical Coupling Simulation 基于机械-电化学耦合模拟的双层电极电池原位曲率测量设计见解

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-10-29 DOI: 10.1007/s10338-024-00538-9

Guoxing Zhang, Huibing Liu, Dawei Li, Bo Lu, Junqian Zhang

{"title":"Design Insights for Bilayer Electrode Batteries in In-Situ Curvature Measurement Based upon Mechanical-Electrochemical Coupling Simulation","authors":"Guoxing Zhang, Huibing Liu, Dawei Li, Bo Lu, Junqian Zhang","doi":"10.1007/s10338-024-00538-9","DOIUrl":"10.1007/s10338-024-00538-9","url":null,"abstract":"<div><p>The largely bending bilayer electrode model battery has been widely used to measure the mechanical properties of composite electrode materials. The assumption used in the method that lithium is uniformly distributed in the active layer lacks quantitative evaluation, and the uniformity of concentration distribution is crucial for accurate in-situ measurements of concentration-related material properties and stress in bilayer electrodes. Therefore, this paper proposes a mechanical-electrochemical coupled model to study the lithium concentration distribution in the active layer during lithiation. This model includes lithium concentration diffusion and active layer deformation. By comparing experimental and simulated curvature evolution of the active layer during lithiation and delithiation, the reliability of this simulation model is verified. We then derive the precise concentration distribution inside the active layer and suggest using relative error to quantitatively evaluate the uniformity of lithium concentration in the active layer. Results show that a low relative error in lithium concentration can be achieved in the middle region of the active layer. Additionally, the effects of different rates and geometric parameters on the lithium concentration distribution in the active layer are discussed. Results indicate that reduced rates, thinner active layers, shorter active layer lengths, and increased spacing between the working and counter electrodes can lead to a more uniform distribution of lithium concentration in the active layer. These insights help improve experimental methods and equipment, promoting uniform distribution of lithium in the active layer and enhancing measurement accuracy.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 3","pages":"446 - 458"},"PeriodicalIF":2.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171705","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

Mechanism of Friction Enhancement Induced by Nanoscale Liquid Film: A Brief Review 纳米级液体膜诱导摩擦增强机理综述

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-10-28 DOI: 10.1007/s10338-024-00545-w

Tianyan Gao, Guorui Wang, Xin’an Chen, Zhong Zhang

{"title":"Mechanism of Friction Enhancement Induced by Nanoscale Liquid Film: A Brief Review","authors":"Tianyan Gao, Guorui Wang, Xin’an Chen, Zhong Zhang","doi":"10.1007/s10338-024-00545-w","DOIUrl":"10.1007/s10338-024-00545-w","url":null,"abstract":"<div><p>Surficial water adsorption and interfacial water condensation as natural phenomena play an essential role in the contact adhesion and friction performances of the solid interface. As the characteristic dimensions downscale to nanometers, the structure and dynamics of the water film at an interface differ significantly from those of its bulk counterpart. In particular, a specific wetting condition termed as the tacky regime has recently sparked great interest in the community, where transient high friction and contact instabilities are observed at the interface that is subjected to the wet-to-dry transition. Unveiling the influence of nanoscale water film on the friction enhancement in the tacky regime will provide theoretical guidance for the friction regulation in the wetting condition. In this article, special emphasis is placed on the development of experimental techniques which allow the visualization of the contact interface (e.g., contact surface deformation, real contact area) and characterization of water film structures (e.g., film thickness, molecular configuration). Building upon the accumulation of recent research activities, we provide an overview of significant advances in understanding the critical mechanisms for friction enhancement, such as vertical capillary force, interfacial shear strength, and ice-like water. Some common design strategies are further given to regulate the friction behavior by tuning the distribution of the water film, surface roughness, and elastic modulus. Finally, we end this review article with a summary of the research status and outlook on areas for future research directions.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 2","pages":"183 - 194"},"PeriodicalIF":2.0,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786504","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

Mechanical Properties of Star-Shaped Gradient Lattice Structures Under Tensile Load 拉伸载荷作用下星形梯度晶格结构的力学性能

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-10-28 DOI: 10.1007/s10338-024-00543-y

Hongyan Chen, Xiufang Zhu, Shuxiang Ma, Haiyang Yang

{"title":"Mechanical Properties of Star-Shaped Gradient Lattice Structures Under Tensile Load","authors":"Hongyan Chen, Xiufang Zhu, Shuxiang Ma, Haiyang Yang","doi":"10.1007/s10338-024-00543-y","DOIUrl":"10.1007/s10338-024-00543-y","url":null,"abstract":"<div><p>Star-shaped lattice structures with a negative Poisson’s ratio (NPR) effect exhibit excellent energy absorption capacity, making them highly promising for applications in aerospace, vehicles, and civil protection. While previous research has primarily focused on single-walled cells, there is limited investigation into negative Poisson’s ratio structures with nested multi-walled cells. This study designed three star-shaped cell structures and three lattice configurations, analyzing the Poisson’s ratio, stress–strain relationship, and energy absorption capacity through tensile experiments and finite element simulations. Among the single structures, the star-shaped configuration r3 demonstrated the best elastic modulus, NPR effect, and energy absorption effect. In contrast, the uniform lattice structure R3 exhibited the highest tensile strength and energy absorption capacity. Additionally, the stress intensity and energy absorption of gradient structures increased with the number of layers. This study aims to provide a theoretical reference for the application of NPR materials in safety protection across civil and vehicle engineering, as well as other fields.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 1","pages":"65 - 77"},"PeriodicalIF":2.0,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430833","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

Level-Set-Based Topology Optimization of a Geometrically Nonlinear Structure Considering Thermo-mechanical Coupling Effect 考虑热-力耦合效应的几何非线性结构的水平集拓扑优化

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-10-28 DOI: 10.1007/s10338-024-00542-z

Sujun Wang, An Xu, Ruohong Zhao

引用次数: 0

Influence of Porosity on Vibration of Porous FG Plates Resting on an Arbitrarily Orthotropic Winkler-Pasternak Foundation by PDDO 用PDDO研究任意正交各向异性温克尔-帕斯捷尔纳克地基上多孔FG板的孔隙率对振动的影响

IF 2 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2024-10-21 DOI: 10.1007/s10338-024-00539-8

Yongyu Yang, Xiaoqi Wang, Hang Zhao, Chao Wang, Changzheng Cheng, Raj Das

{"title":"Influence of Porosity on Vibration of Porous FG Plates Resting on an Arbitrarily Orthotropic Winkler-Pasternak Foundation by PDDO","authors":"Yongyu Yang, Xiaoqi Wang, Hang Zhao, Chao Wang, Changzheng Cheng, Raj Das","doi":"10.1007/s10338-024-00539-8","DOIUrl":"10.1007/s10338-024-00539-8","url":null,"abstract":"<div><p>This paper studies the vibration responses of porous functionally graded (FG) thin plates with four various types of porous distribution based on the physical neutral plane by employing the peridynamic differential operator (PDDO). It is assumed that density and elastic modulus continuously vary along the transverse direction following the power law distribution for porous FG plates. The governing differential equation of free vibration for a porous rectangular FG plate and its associated boundary conditions are expressed by a Lévy-type solution based on nonlinear von Karman plate theory. Dimensionless frequencies and mode shapes are obtained after solving the characteristic equations established by PDDO. The results of the current method are validated through comparison with existing literature. The effects of geometric parameters, material properties, elastic foundation, porosity distribution, and boundary conditions on the frequency are investigated and discussed in detail. The highest fundamental dimensionless frequency occurs under SCSC boundary conditions, while the lowest is under SFSF boundary conditions. The porous FG plate with the fourth pore type, featuring high density of porosity at the top and low at the bottom, exhibits the highest fundamental frequency under SSSS, SFSF, and SCSC boundary conditions. The dimensionless frequency increases with an increase in the elastic foundation stiffness coefficient.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 1","pages":"142 - 151"},"PeriodicalIF":2.0,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430786","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