国际机械系统动力学学报(英文)最新文献_第10页

Theoretical model of lithium iron phosphate power battery under high-rate discharging for electromagnetic launch 高倍率电磁发射下磷酸铁锂动力电池的理论模型

国际机械系统动力学学报(英文) Pub Date : 2021-12-13 DOI: 10.1002/msd2.12014

Ren Zhou, Junyong Lu, Xinlin Long, Yiting Wu, Lang Liu, Yingquan Liu

{"title":"Theoretical model of lithium iron phosphate power battery under high-rate discharging for electromagnetic launch","authors":"Ren Zhou, Junyong Lu, Xinlin Long, Yiting Wu, Lang Liu, Yingquan Liu","doi":"10.1002/msd2.12014","DOIUrl":"10.1002/msd2.12014","url":null,"abstract":"Due to the large error of the traditional battery theoretical model during large-rate discharge for electromagnetic launch, the Shepherd derivative model considering the factors of the pulse cycle condition, temperature, and life is proposed by the Naval University of Engineering. The discharge rate of traditional lithium-ion batteries does not exceed 10C, while that for electromagnetic launch reaches 60C. The continuous pulse cycle condition of ultra-large discharging rate causes many unique electrochemical reactions inside the cells. The traditional model cannot accurately describe the discharge characteristics of the battery. The accurate battery theoretical model is an important basis for system efficiency calculation, precise discharge control, and remaining capacity prediction. To this purpose, an experimental platform for electromagnetic launch is built, and discharge characteristics of the battery under different rate, temperature, and life decay are measured. Through the experimental test and analysis, the reason that the traditional model cannot accurately characterize the large-rate discharge process is analyzed. And a novel battery theoretical model is designed with the help of genetic algorithm, which is integrated with the electromagnetic launch topology. Numerical simulation is compared with the experimental results, which verifies the modeling accuracy for the large-rate discharge. On this basis, a variety of discharge conditions are applied to test the applicability of the model, resulting in better results. Finally, with the continuous cycle-pulse condition in the electromagnetic launch system, the stability and accuracy of the model are confirmed.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"1 2","pages":"220-229"},"PeriodicalIF":0.0,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124222855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Mechanical system and dynamic control in photolithography for nanoscale fabrication: A critical review 纳米级光刻工艺中的机械系统和动态控制:综述

国际机械系统动力学学报(英文) Pub Date : 2021-11-29 DOI: 10.1002/msd2.12010

Yi Song, Chengqun Gui, Zongliang Huo, S. W. Ricky Lee, Sheng Liu

引用次数: 2

A generalized approach for implicit time integration of piecewise linear/nonlinear systems 分段线性/非线性系统隐式时间积分的一种广义方法

国际机械系统动力学学报(英文) Pub Date : 2021-11-29 DOI: 10.1002/msd2.12007

Huimin Zhang, Runsen Zhang, Andrea Zanoni, Pierangelo Masarati

引用次数: 3

A review on material models for isotropic hyperelasticity 各向同性超弹性材料模型研究进展

国际机械系统动力学学报(英文) Pub Date : 2021-11-29 DOI: 10.1002/msd2.12013

Stephen K. Melly, Liwu Liu, Yanju Liu, Jinsong Leng

{"title":"A review on material models for isotropic hyperelasticity","authors":"Stephen K. Melly, Liwu Liu, Yanju Liu, Jinsong Leng","doi":"10.1002/msd2.12013","DOIUrl":"10.1002/msd2.12013","url":null,"abstract":"Dozens of hyperelastic models have been formulated and have been extremely handy in understanding the complex mechanical behavior of materials that exhibit hyperelastic behavior (characterized by large nonlinear elastic deformations that are completely recoverable) such as elastomers, polymers, and even biological tissues. These models are indispensable in the design of complex engineering components such as engine mounts and structural bearings in the automotive and aerospace industries and vibration isolators and shock absorbers in mechanical systems. Particularly, the problem of vibration control in mechanical system dynamics is extremely important and, therefore, knowledge of accurate hyperelastic models facilitates optimum designs and the development of three-dimensional finite element system dynamics for studying the large and nonlinear deformation behavior. This review work intends to enhance the knowledge of 15 of the most commonly used hyperelastic models and consequently help design engineers and scientists make informed decisions on the right ones to use. For each of the models, expressions for the strain-energy function and the Cauchy stress for both arbitrary loading assuming compressibility and each of the three loading modes (uniaxial tension, equibiaxial tension, and pure shear) assuming incompressibility are provided. Furthermore, the stress–strain or stress–stretch plots of the model's predictions in each of the loading modes are compared with that of the classical experimental data of Treloar and the coefficient of determination is utilized as a measure of the model's predictive ability. Lastly, a ranking scheme is proposed based on the model's ability to predict each of the loading modes with minimum deviations and the overall coefficient of determination.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"1 1","pages":"71-88"},"PeriodicalIF":0.0,"publicationDate":"2021-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127699073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

Flexible electronics with dynamic interfaces for biomedical monitoring, stimulation, and characterization 柔性电子与动态接口的生物医学监测，刺激，和表征

国际机械系统动力学学报(英文) Pub Date : 2021-11-29 DOI: 10.1002/msd2.12017

Xu Guo, Raudel Avila, Yonggang Huang, Zhaoqian Xie

{"title":"Flexible electronics with dynamic interfaces for biomedical monitoring, stimulation, and characterization","authors":"Xu Guo, Raudel Avila, Yonggang Huang, Zhaoqian Xie","doi":"10.1002/msd2.12017","DOIUrl":"10.1002/msd2.12017","url":null,"abstract":"Recent developments in the fields of materials science and engineering technology (mechanical, electrical, biomedical) lay the foundation to design flexible bioelectronics with dynamic interfaces, widely used in biomedical/clinical monitoring, stimulation, and characterization. Examples of this technology include body motion and physiological signal monitoring through soft wearable devices, mechanical characterization of biological tissues, skin stimulation using dynamic actuators, and energy harvesting in biomedical implants. Typically, these bioelectronic systems feature thin form factors for enhanced flexibility and soft elastomeric encapsulations that provide skin-compliant mechanics for seamless integration with biological tissues. This review examines the rapid and continuous progress of bioelectronics in the context of design strategies including materials, mechanics, and structure to achieve high performance dynamic interfaces in biomedicine. It concludes with a concise summary and insights into the ongoing opportunities and challenges facing developments of bioelectronics with dynamic interfaces for future applications.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"1 1","pages":"52-70"},"PeriodicalIF":0.0,"publicationDate":"2021-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12017","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133185204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Mesh stiffness calculation and vibration analysis of the spur gear pair with tooth crack, considering the misalignment between the base and root circles 考虑齿根圆与齿根圆不对中，含齿裂直齿齿轮副啮合刚度计算及振动分析

国际机械系统动力学学报(英文) Pub Date : 2021-11-29 DOI: 10.1002/msd2.12003

Jingyu Hou, Shaopu Yang, Qiang Li, Yongqiang Liu, Jiujian Wang

引用次数: 2

Eigenvalue sensitivity analysis based on the transfer matrix method 基于传递矩阵法的特征值敏感性分析

国际机械系统动力学学报(英文) Pub Date : 2021-11-29 DOI: 10.1002/msd2.12016

Dieter Bestle

{"title":"Eigenvalue sensitivity analysis based on the transfer matrix method","authors":"Dieter Bestle","doi":"10.1002/msd2.12016","DOIUrl":"10.1002/msd2.12016","url":null,"abstract":"For linear mechanical systems, the transfer matrix method is one of the most efficient modeling and analysis methods. However, in contrast to classical modeling strategies, the final eigenvalue problem is based on a matrix which is a highly nonlinear function of the eigenvalues. Therefore, classical strategies for sensitivity analysis of eigenvalues w.r.t. system parameters cannot be applied. The paper develops two specific strategies for this situation, a direct differentiation strategy and an adjoint variable method, where especially the latter is easy to use and applicable to arbitrarily complex chain or branched multibody systems. Like the system analysis itself, it is able to break down the sensitivity analysis of the overall system to analytically determinable derivatives of element transfer matrices and recursive formula which can be applied along the transfer path of the topology figure. Several examples of different complexity validate the proposed approach by comparing results to analytical calculations and numerical differentiation. The obtained procedure may support gradient-based optimization and robust design by delivering exact sensitivities.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"1 1","pages":"96-107"},"PeriodicalIF":0.0,"publicationDate":"2021-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125586475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Nonlinear wave in granular systems based on elastoplastic dashpot model

国际机械系统动力学学报(英文) Pub Date : 2021-11-29 DOI: 10.1002/msd2.12008

Gengxiang Wang, Caishan Liu

{"title":"Nonlinear wave in granular systems based on elastoplastic dashpot model","authors":"Gengxiang Wang, Caishan Liu","doi":"10.1002/msd2.12008","DOIUrl":"10.1002/msd2.12008","url":null,"abstract":"The dynamic dashpot models are widely used in EDEM commercial software. However, most dashpot models suffer from a serious numerical issue in calculating the granular chain because the denominator of damping force includes the initial impact velocity. Moreover, the existing dynamic dashpot models extended from the original Hertz contact law overestimated the contact stiffness in the elastoplastic contact phase. These two reasons above result in most dynamic dashpot models confronting some issues in calculating the multiple collision of the granular chain. Therefore, this investigation aims to propose a new composite dynamic dashpot model for the dynamic simulation of granular matters. First, the entire contact process is divided into three different phases: elastic, elastoplastic, and full plastic phases. The Hertz contact stiffness is still used in the elastic contact phase when the contact comes into the elastoplastic or full plastic phase. Hertz contact stiffness in the dynamic dashpot model is replaced by linearizing the contact stiffness from the Ma-Liu (ML) model in each time step. Second, the whole contact behavior is treated as a linear mass-spring-damper model, and the damping factor is obtained by solving the single-degree-freedom underdamped vibration equation. The new dynamic dashpot model is proposed by combining the contact stiffnesses in different contact phases and corresponding damping factors, which not only removes the initial impact velocity from the denominator of damping force but also updates the contact stiffness based on the constitutive relation of the contact body when the contact comes into the elastoplastic or full plastic phase. Finally, a granular chain is treated as numerical examples to check the reasonability and effectiveness of the new dynamic dashpot model by comparing it to the experimental data. The simulation shows that the solitary waves obtained using the new dashpot model are more accurate than the dashpot model used in EDEM software.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"1 1","pages":"132-142"},"PeriodicalIF":0.0,"publicationDate":"2021-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125865114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Aeroelastic analysis and flutter control of wings and panels: A review 机翼和襟板气动弹性分析与颤振控制综述

国际机械系统动力学学报(英文) Pub Date : 2021-11-27 DOI: 10.1002/msd2.12015

Yuyang Chai, Wei Gao, Benjamin Ankay, Fengming Li, Chuanzeng Zhang

{"title":"Aeroelastic analysis and flutter control of wings and panels: A review","authors":"Yuyang Chai, Wei Gao, Benjamin Ankay, Fengming Li, Chuanzeng Zhang","doi":"10.1002/msd2.12015","DOIUrl":"10.1002/msd2.12015","url":null,"abstract":"Flutter is a self-excited vibration under the interaction of the inertial force, aerodynamic force, and elastic force of the structure. After the flutter occurs, the aircraft structures will exhibit limit cycle oscillation, which will cause catastrophic accidents or fatigue damage to the structures. Therefore, it is of great theoretical and practical significance to study the aeroelastic characteristics and flutter control for improving the aeroelastic stability of aircraft structures. This paper reviews the recent advances in aeroelastic analysis and flutter control of wings and panel structures. The mechanism of aeroelastic flutter of wings and panels is presented. The research methods of aeroelastic flutter for different structures developed in recent years are briefly summarized. Various control strategies including the linear and nonlinear control algorithms as well as the active flutter control results of wings and panels are presented. Finally, the paper ends with conclusions, which highlight challenges of the development in aeroelastic analysis and flutter control, and provide a brief outlook on the future investigations. This study aims to present a comprehensive understanding of aeroelastic analysis and flutter control. It can also provide guidance on the design of new wings and panel structures for improving their aeroelastic stability.","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"1 1","pages":"5-34"},"PeriodicalIF":0.0,"publicationDate":"2021-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.12015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124182170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Simplified modeling of electromagnets for dynamic simulation of transient effects for a synchronous electric motor 用于同步电动机瞬态效应动态仿真的电磁铁简化建模

国际机械系统动力学学报(英文) Pub Date : 2021-11-17 DOI: 10.1002/msd2.12005

Florian Bechler, Julius Kesten, Florian Wittemann, Frank Henning, Martin Doppelbauer, Peter Eberhard

引用次数: 3