锻压技术

考虑耗散接触特征的高速精密冲床动态特性

英文标题：Dynamic characteristics on high-speed precision press considering dissipative contact characteristics

作者：刘艳1 王禹2 陈宇2

分类号：TH122

出版年,卷(期):页码：2023,48(12):196-205

摘要：

基于多体动力学理论、非线性接触理论和库伦摩擦理论，提出一种含间隙高速精密冲床传动动态特性分析方法。该方法将多体系统动力学方程与耗散接触特征模型相结合，并考虑碰撞体间的粘滞摩擦作用，建立了含间隙非线性多体系统动力学模型。在重力场中以高速精密冲床传动系统接触碰撞过程为研究对象进行数值计算，并对比试验结果，验证了模型的有效性，得到了间隙耗散接触特征与高速精密冲床动力学特性的映射关系。研究表明，含间隙非线性多体动力学模型能够有效描述含间隙传动机构的动态特性，为高速精密冲床动态特性研究提供了一种有效的方法，有利于机构的性能评价、结构设计优化等工程实际应用。

Based on the multi-body dynamics theory, nonlinear contact theory and Coulomb friction theory, a method for analyzing the dynamic characteristics of for transmission for high-speed precision press with clearance was proposed, which combined the multi-body system dynamic equations with the dissipative contact characteristic model and considered the viscous friction effect between colliding bodies to establish a nonlinear multi-body system dynamics model with clearance. Then, the contact and collision process of the high-speed precision press transmission system in the gravity field was taken as the research object for numerical calculation, and the validity of the model was verified by comparing with the experimental results. Furthermore, the mapping relationship between the clearance dissipative contact characteristics and the dynamic characteristics of high-speed precision press was obtained. Research results show that the nonlinear multi-body dynamic model with clearance can effectively describe the dynamic characteristics of the transmission mechanical with clearance, and provides an effective method for the study of dynamic characteristics of high-speed precision press, which is beneficial to the practical engineering applications such as mechanism performance evaluation and structural design optimization.

基金项目：

中国博士后科学基金项目(2020M681531);泰州市科技支承(工业共性关键技术)项目(TN201717)

作者简介：刘艳（1981-），女，硕士，副教授 E-mail：93867120@qq.com

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