Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control最新文献

A Lie Group Approach to the Modular Modeling of Kinematically Non-Redundant Parallel Mechanisms 运动非冗余并联机构模块化建模的李群方法

Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control Pub Date : 2019-11-25 DOI: 10.1115/detc2019-98283

A. Müller

引用次数: 0

Dynamic Analysis of Multiple Launch Rocket System Under the Action of Jet Flow 射流作用下多管火箭发射系统动力学分析

Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control Pub Date : 2019-11-25 DOI: 10.1115/detc2019-98493

Shutian Li, Guoping Wang, Y. Miao, X. Rui

引用次数: 0

Transversal Vibration Analysis of Vehicle Track System 车辆轨道系统横向振动分析

Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control Pub Date : 2019-11-25 DOI: 10.1115/detc2019-98331

Pingxin Wang, X. Rui, Jianshu Zhang, Hailong Yu

{"title":"Transversal Vibration Analysis of Vehicle Track System","authors":"Pingxin Wang, X. Rui, Jianshu Zhang, Hailong Yu","doi":"10.1115/detc2019-98331","DOIUrl":"https://doi.org/10.1115/detc2019-98331","url":null,"abstract":"\u0000 The track is mainly composed of track shoes, track pins and rubber bushing elements. In order to suppress the transversal vibration of the upper track during the smooth running process of the tracked vehicle, it is necessary to study the important factors affecting the frequency characteristics of the kinematic chain and their interaction. Unlike the conventional chain drive system, the track in the natural state has a bending rigidity due to the action of the rubber bushing. Based on the dynamic theory of axially moving beam, the differential equation of transversal vibration of a beam element is established. The entire upper track is assumed to be a continuous multi-span axially moving Euler-Bernoulli beam with an axial tension. Based on the Transfer Matrix Method of Multibody System, the transfer equation is obtained. According to the boundary conditions, the natural frequency of the system is solved. The correctness of the beam model hypothesis is verified by experiments. The results show that the first-order natural frequency of the upper track increases with the increase of the tension and the decrease of the vehicle speed. Through frequency analysis, the main excitation source for the transversal vibration of the track is the polygon effect produced by the meshing of the track and the sprocket. This study provides a theoretical basis for the vibration analysis and stability control of the upper track on the tracked vehicle.","PeriodicalId":338372,"journal":{"name":"Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121565944","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

Effect of Rubber Material Properties on Steady-State Flat Belt Response 橡胶材料性能对稳态平带响应的影响

Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control Pub Date : 2019-11-25 DOI: 10.1115/detc2019-98166

T. Wasfy, Hatem M. Wasfy

{"title":"Effect of Rubber Material Properties on Steady-State Flat Belt Response","authors":"T. Wasfy, Hatem M. Wasfy","doi":"10.1115/detc2019-98166","DOIUrl":"https://doi.org/10.1115/detc2019-98166","url":null,"abstract":"\u0000 Belt-drives are used to transmit power between rotational machine elements in many mechanical systems such as industrial machines, home appliances, and internal combustion engines. The belt cross-section typically consists of axially stiff tension cords (made of steel or polyester strands) embedded in a rubber matrix. The rubber matrix provides the friction interface between the belt and the pulleys through which mechanical torque is transmitted. In this paper, the effect of the rubber’s Young’s modulus and Poisson’s ratio on the steady-state belt normal, tangential and axial stresses, average belt slip, and belt-drive energy efficiency is studied using a high-fidelity flexible multibody dynamics model of a flat belt-drive. The belt’s rubber matrix is modeled using three-dimensional brick elements and the belt’s cords are modeled using one dimensional truss elements. Friction between the belt and the pulleys is modeled using an asperity-based Coulomb friction model. The pulleys are modeled as rigid bodies with a cylindrical contact surface. The equations of motion are integrated using a time-accurate explicit solution procedure.","PeriodicalId":338372,"journal":{"name":"Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114882081","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: 1

Modified Model-Free Adaptive Control Method Applied to Vibration Control of an Elastic Crane 改进的无模型自适应控制方法在弹性起重机振动控制中的应用

Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control Pub Date : 2019-11-25 DOI: 10.1115/detc2019-97654

H. Pham, D. Söffker

{"title":"Modified Model-Free Adaptive Control Method Applied to Vibration Control of an Elastic Crane","authors":"H. Pham, D. Söffker","doi":"10.1115/detc2019-97654","DOIUrl":"https://doi.org/10.1115/detc2019-97654","url":null,"abstract":"\u0000 Model-free adaptive control (MFAC) is a data-driven control approach receiving increased attention in the last years. Different model-free-based control strategies are proposed to design adaptive controllers when mathematical models of the controlled systems should not be used or are not available. Using only measurements (I/O data) from the system, a feedback controller is generated without the need of any structural information about the controlled plant. In this contribution an improved MFAC is discussed for control of unknown multivariable flexible systems. The main improvement in control input calculation is based on the consideration of output tracking errors and its variations. A new updated control input algorithm is developed. The novel idea is firstly applied for controlling vibrations of a MIMO ship-mounted crane. The control efficiency is verified via numerical simulations. The simulation results demonstrate that vibrations of the elastic boom and the payload of the crane can be reduced significantly and better control performance is obtained when using the proposed controller compared to standard model-free adaptive and PI controllers.","PeriodicalId":338372,"journal":{"name":"Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control","volume":"273 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134028910","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: 1

Approximate Force History Estimation in Multi-Point Non-Smooth Collisions 多点非光滑碰撞的近似力历史估计

Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control Pub Date : 2019-11-25 DOI: 10.1115/detc2019-98143

A. Chatterjee, A. Bowling, H. Ghaednia, M. Brake

引用次数: 0

Study on the Mixed Method of Transfer Matrix Method and Finite Element Method for Vibration of Multibody System 多体系统振动的传递矩阵法与有限元法混合方法研究

Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control Pub Date : 2019-11-25 DOI: 10.1115/detc2019-97749

Hanjing Lu, X. Rui, Jianshu Zhang, Yuanyuan Ding

引用次数: 1

Improvement of a Forward Dynamic Predictive Human Gait Model 一种前向动态预测人体步态模型的改进

Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control Pub Date : 2019-11-25 DOI: 10.1115/detc2019-97162

J. Thayer, Philip A. Voglewede

引用次数: 0

Dynamics and Control of Self-Standable Motorcycle 自支撑摩托车动力学与控制

Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control Pub Date : 2019-11-25 DOI: 10.1115/detc2019-97154

S. Hara, Koki Nakagami, Kikuko Miyata, Mitsuo Tsuchiya, E. Tsujii

引用次数: 2

The Study of Magnetorheological Elastomer Based on Natural Rubber (NR)/Polybutadiene Rubber (BR) Hybrid Matrix: Experimental and Numerical Simulation 基于天然橡胶(NR)/聚丁二烯橡胶(BR)混合基体的磁流变弹性体研究:实验与数值模拟

Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control Pub Date : 2019-11-25 DOI: 10.1115/detc2019-98299

Xincheng Song, Wenju Wang, Fufeng Yang, Guoping Wang, X. Rui

{"title":"The Study of Magnetorheological Elastomer Based on Natural Rubber (NR)/Polybutadiene Rubber (BR) Hybrid Matrix: Experimental and Numerical Simulation","authors":"Xincheng Song, Wenju Wang, Fufeng Yang, Guoping Wang, X. Rui","doi":"10.1115/detc2019-98299","DOIUrl":"https://doi.org/10.1115/detc2019-98299","url":null,"abstract":"\u0000 Magnetorheological elastomer (MRE) is a new kind of smart materials whose mechanical properties can be controlled under external magnetic field and it is mainly consist of matrix materials and magnetic particles. In this work, the natural rubber (NR)/polybutadiene rubber (BR) hybrid matrix based MRE were prepared and the compatibility of NR and BR were studied. The hybrid matrix was prepared by physical mixing method. The characterization results showed that the BR had excellent compatibility with NR. The measurement result using rheological showed that the MR effect can be increased to 44.19% by adding of BR. The dynamic thermomechanical analysis showed that the hybrid matrix formed a homogeneous system when the ratio of BR and NR is 1/9 and 3/7. The particles was mixed with matrix using physical technology. The process of mixing was analyzed by numerical simulation. The simulation result showed that the increase of diameter of particles would increase the temperature and velocity of matrix in mixing. The particles was distributed evenly at enough mixing time and the mixing time was decreased with the diameter of particles.","PeriodicalId":338372,"journal":{"name":"Volume 6: 15th International Conference on Multibody Systems, Nonlinear Dynamics, and Control","volume":"227 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134460646","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