含移动副间隙曲柄滑块机构动态特性研究  

Dynamic Characteristics of Crank-Slider Mechanism with Translational Joint Clearance

作　　者：张楷源 李圣雨 杨羽中 彭柱 尹来容[1] ZHANG Kai-yuan;LI Sheng-yu;YANG Yu-zhong;PENG Zhu;YIN Lai-rong(School of Automotive and Mechanical Engineering,Changsha University of Science&Technology,Changsha Hunan 410114,China;Hengyang Tellhow Communication Vehicle Co.,Ltd,Hengyang Hunan 421099,China;Hunan Scratchable Latex Intelligent Technology Co.,Ltd,Changsha Hunan 410205,China)

机构地区：[1]长沙理工大学汽车与机械工程学院,湖南长沙410114 [2]衡阳泰豪通信车辆有限公司,湖南衡阳421099 [3]湖南九宫格智能科技有限公司,湖南长沙410205

出　　处：《机械研究与应用》2022年第4期15-19,共5页Mechanical Research & Application

基　　金：湖南省自然科学基金面上项目:运动副间隙耦合的机构解域综合方法及其动态性能评价(编号:2021JJ30726);湖南省教育厅优秀青年项目:复杂工程装备机构可视化综合理论及可靠性研究(编号:20B017);长沙理工大学研究生科研创新项目:高陡边坡施工装备机构设计分析与动力学特性研究(编号:CX2020SS39)。

摘　　要：为研究移动副间隙对机构动态特性的影响,建立了移动副间隙数学模型。区分了滑块与导轨不同的接触形式,并分别匹配合理的接触力模型。采用考虑粘-滑转变的摩擦力模型计算滑块所受切向摩擦力。以曲柄滑块机构为研究对象,建立了多体系统动力学模型,将间隙接触力作为系统外力引入所建立的动力学模型中。开展基于MATLAB的机构动力学仿真,对比不同间隙尺寸与驱动速度下系统动态响应曲线。分析并得出移动副间隙对机械系统动态特性影响规律,为机械设计与机械装备开发提供理论指导。In order to study the influence of the translational joint clearance on the dynamic characteristics of the mechanism,the numerical model of translational joint clearance is established in this article.Different contact forms between slider and guide are distinguished;and reasonable contact force models are matched respectively.The frictional force model considering the stick-slip transition is used to calculate the tangential frictional force on the slider.A multi-body system dynamic model of crank-slider mechanism system is established,and the clearance contact force is introduced into the established dynamic model as the external force of the system.The mechanism dynamics simulation based on MATLAB is carried out;and the dynamic response of the system under different clearance size and driving speed are compared.The specific influence of the translational joint clearance on the dynamic characteristics of mechanical system is obtained,which provides theoretical reference for mechanical design and mechanical equipment development.

关 键 词：移动副间隙 动态特性 接触力模型 多体系统动力学 

分 类 号：TH113[机械工程—机械设计及理论]