Volume 5: Dynamics, Vibration, and Control最新文献_第10页

Mechanical Design Upgrade of Kinematically Reconfigurable Humanoid, HART 运动学可重构人形机器人的机械设计升级，HART

Volume 5: Dynamics, Vibration, and Control Pub Date : 2022-10-30 DOI: 10.1115/imece2022-94631

Kiwon Sohn, Jordaine Wisdom, Ethan Sharpe, James Robinson, Akin Tatoglu

引用次数: 0

MATLAB Toolbox for Design and Motion Analysis of Compliant Mechanisms and Soft Robots 柔性机构和软体机器人设计与运动分析的MATLAB工具箱

Volume 5: Dynamics, Vibration, and Control Pub Date : 2022-10-30 DOI: 10.1115/imece2022-94205

Andrea Contreras Esquen, J. Delgado, Lance Soo, Kevin Saldivar, Lucas Schwenck, Amir Ali Amiri Moghadam, A. Tekes

{"title":"MATLAB Toolbox for Design and Motion Analysis of Compliant Mechanisms and Soft Robots","authors":"Andrea Contreras Esquen, J. Delgado, Lance Soo, Kevin Saldivar, Lucas Schwenck, Amir Ali Amiri Moghadam, A. Tekes","doi":"10.1115/imece2022-94205","DOIUrl":"https://doi.org/10.1115/imece2022-94205","url":null,"abstract":"\u0000 Despite the advantages and superiorities of compliant mechanisms and soft robots over rigid mechanisms, optimizing the stiffness of flexible links and dynamic properties of complex and high mobility designs is increasingly challenging. Additionally, the largest challenge in the design and modeling of such systems is understanding the deformation of the two bodies when connected along with their interaction in complex cases such as large deflecting buckling beams, especially for people who are new in the area. There exist several methods and techniques for obtaining kinematic relations as pseudo rigid body modeling (PRBM), first and second kind of Elliptica theory, discrete beam element method for simple geometries of compliant mechanisms, and nonlinear dynamical modeling of soft robots assuming using constant curvature spatial curves, and also machine learning. To address this issue, we present the user-friendly and open-access MATLAB Toolbox for the design and motion analysis of compliant mechanisms and soft robots. The developed toolbox serves as a platform to visualize the deformation of compliant joints and compliant beams (Module 1), visualize the displacement of various compliant mechanisms (Module 2), design simple and complex compliant mechanisms using the hinges and beams, and design and motion analysis of soft robots (Module 3).","PeriodicalId":302047,"journal":{"name":"Volume 5: Dynamics, Vibration, and Control","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128897732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Period-3 and Period-6 Motions in a Nonlinear Spring Pendulum 非线性弹簧摆的周期3和周期6运动

Volume 5: Dynamics, Vibration, and Control Pub Date : 2022-10-30 DOI: 10.1115/imece2022-96427

Yu Guo, A. Luo

引用次数: 0

On the Observability of Quantum Dynamical Systems 论量子动力系统的可观测性

Volume 5: Dynamics, Vibration, and Control Pub Date : 2022-10-30 DOI: 10.1115/imece2022-88856

Tristan D. Griffith, Vinod P. Gehlot, M. Balas

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Design and Fabrication of a Test Rig for a New Approach on Health Monitoring of Roller Bearings Using Acoustic Emission 基于声发射的滚子轴承健康监测新方法试验台的设计与制造

Volume 5: Dynamics, Vibration, and Control Pub Date : 2022-10-30 DOI: 10.1115/imece2022-95074

Heimir Rafn Bjarkason, Sæþór Ásgeirsson, Runar Unnthorsson

引用次数: 0

Nonlinear Dynamics Simulation of Globoidal Cam and Roller Follower Mechanism With Clearanance Using Different Material Properties 不同材料特性下带间隙弧面凸轮滚子从动件机构的非线性动力学仿真

Volume 5: Dynamics, Vibration, and Control Pub Date : 2022-10-30 DOI: 10.1115/imece2022-94732

L. S. Yousuf

{"title":"Nonlinear Dynamics Simulation of Globoidal Cam and Roller Follower Mechanism With Clearanance Using Different Material Properties","authors":"L. S. Yousuf","doi":"10.1115/imece2022-94732","DOIUrl":"https://doi.org/10.1115/imece2022-94732","url":null,"abstract":"\u0000 The effect of contact different material properties for globoidal cam and roller follower system on the nonlinear dynamics phenomenon is investigated at different cam speeds and different follower guides’ clearances. The contact between the cam and the follower and between the follower and its guides are considered at different contact conditions. The optimal contact condition is selected based on the value of local Lyapunov exponent parameter. The impact and friction are considered in SolidWorks program based on the value of sliding contact velocity and kinetic coefficient of friction. The contact condition is steel dry, steel greasy, nylon, acrylic, aluminum dry, and aluminum greasy. The nonlinear dynamics and chaos is detected using phase-plane diagram and Poincare’ map. The trend of the nonlinear response of the follower displacement is discussed at different contact conditions. The more black dots in Poincare’ maps, the more detachment heights between the cam and the follower since the black dots are stationed around one area inside Poincare’ map. In phase-plane diagram, the follower displacement-velocity diverges with no limit of spiral cycles which gives indication that the motion is non-periodic and chaos.","PeriodicalId":302047,"journal":{"name":"Volume 5: Dynamics, Vibration, and Control","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125651877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Applying Artificial Intelligence to Optimize Small-Scale Ocean Current Turbine Performance 应用人工智能优化小型洋流涡轮性能

Volume 5: Dynamics, Vibration, and Control Pub Date : 2022-10-30 DOI: 10.1115/imece2022-95804

S. Rouhi, S. Sadeqi, N. Xiros, L. Birk, E. Aktosun, J. Ioup

引用次数: 0

Research on Mono-Fractal Characteristics of Dynamic Pressure at the Outlet of Centrifugal Compressor Based on EWT 基于EWT的离心压缩机出口动压单分形特性研究

Volume 5: Dynamics, Vibration, and Control Pub Date : 2022-10-30 DOI: 10.1115/imece2022-94792

Yan Liu, Yuchen Li, Jincheng Geng

{"title":"Research on Mono-Fractal Characteristics of Dynamic Pressure at the Outlet of Centrifugal Compressor Based on EWT","authors":"Yan Liu, Yuchen Li, Jincheng Geng","doi":"10.1115/imece2022-94792","DOIUrl":"https://doi.org/10.1115/imece2022-94792","url":null,"abstract":"\u0000 In this paper, the outlet dynamic pressure of 800kw centrifugal compressor is taken as the research object, and the nonlinear characteristics of the system under different working conditions are analyzed by using empirical wavelet transform combined with mono-fractal. Firstly, the characteristics of the dynamic pressure signal when the system enters the surge state from the steady state through the transition process are analyzed, and the spectrum analysis of the dynamic pressure signal is carried out. Secondly, the modal components of the signal are extracted by empirical wavelet transform and the signal is reconstructed according to the correlation coefficient. Finally, the autocorrelation function of the reconstructed signal in different states and its Hurst parameters are studied. The research results show that when the system enters the surge state from the steady state, the spectrum of the dynamic pressure signal gradually concentrates to the low frequency band. And, the autocorrelation function and Hurst parameter of the reconstructed signal can effectively reflect the working state of the system.","PeriodicalId":302047,"journal":{"name":"Volume 5: Dynamics, Vibration, and Control","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128240587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulating a Piezoelectric-Haptic MEMS Actuator in Low-Frequency Vibration 低频振动下压电触觉MEMS驱动器的仿真

Volume 5: Dynamics, Vibration, and Control Pub Date : 2022-10-30 DOI: 10.1115/imece2022-88828

Alexander Benson, Seth Carl, Shawn Duan

{"title":"Simulating a Piezoelectric-Haptic MEMS Actuator in Low-Frequency Vibration","authors":"Alexander Benson, Seth Carl, Shawn Duan","doi":"10.1115/imece2022-88828","DOIUrl":"https://doi.org/10.1115/imece2022-88828","url":null,"abstract":"\u0000 When developing a haptic mouse, the authors aimed to exploit a documented phenomenon in which tangential loads to a user’s finger are aliased with positional cues. A flextension-style microelectromechanical system (MEMS) was designed to increase the range of actuation possible with the piezoelectrics preferred by nearly 10. The flextensional system converted the piezoelectric actuator into a two-degree-of-freedom (DOF) system, with the piezoactuator as a cyclic force. The actuator was intended to provide a wide range of feedback, the primary modality being the aliased positional cues with vibration as a secondary feedback mode. A single axis of the complete system was studied and designed for simplicity.\u0000 Simulations of a piezoelectric actuator vibrating with and without a human finger resting on the actuator were studied. The actuator resembles a two-DOF system without a finger. With a finger, the actuator becomes a three-DOF system. All systems were simulated using MATLAB’s ODE45 solver.\u0000 The quality of a single-degree-of-freedom reduction depended on whether the user’s finger was considered. Without a finger, no significant deviations in the system’s behavior were found; the equivalent spring, mass, and damper coefficients match those calculated by standard reduction methods without complication. The addition of a finger complicated the simulation. The frequency behavior of the single-degree-of-freedom system dropped an order of magnitude below the frequencies of the multi-degree-of-freedom system. This drop resulted in discrepancies between the simulated behavior of the multi-degree-of-freedom and its single-degree-of-freedom equivalent.","PeriodicalId":302047,"journal":{"name":"Volume 5: Dynamics, Vibration, and Control","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128316350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Active Meta Materials and the Change of the Path of Elastic Waves and Blast Waves 活性元材料与弹性波和爆炸波路径的变化

Volume 5: Dynamics, Vibration, and Control Pub Date : 2022-10-30 DOI: 10.1115/imece2022-95113

S. Hanagud

{"title":"Active Meta Materials and the Change of the Path of Elastic Waves and Blast Waves","authors":"S. Hanagud","doi":"10.1115/imece2022-95113","DOIUrl":"https://doi.org/10.1115/imece2022-95113","url":null,"abstract":"\u0000 The concept of a negative refractive index stimulated research activity in 1960s. One researcher showed that it is possible to realize negative refractive index if we have a material that can have simultaneous negative electric permeability and negative magnetic permittivity, at the same frequency. At that time, no such material was available.\u0000 After three decades, several physicists started to explore the possibility of using meta materials to achieve the objective. Meta materials are materials with specially designed internal structure. They extended the research further to design a coordinate transformation technique, with distributed permeability and permittivity to steer the optical wave in any desired path. It was difficult to achieve these objectives because the optical wave lengths are very small.\u0000 Then, the interest shifted to impacting elastic waves where the wave lengths are large. However, the goal of steering the wave required a new distribution of the elastic modulus and a new distribution of density, in the material after active meta material control. In this paper, a method of achieving such a distribution by using active meta materials and the associated control procedures is presented. Three basic structures are considered. They are the structures that resist flexural vibrations, longitudinal waves and torsional waves. All three cases result in identical active meta material control equations and control procedures with different natural frequencies that are functions of both the density and elastic constants.","PeriodicalId":302047,"journal":{"name":"Volume 5: Dynamics, Vibration, and Control","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115745173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0