Transactions of Materials and Heat Treatment

Title：Dynamic characteristics on high-speed precision press considering dissipative contact characteristics

Authors： Liu Yan1 Wang Yu2 Chen Yu2

Unit： 1.Taizhou Institute of Science and Technology Nanjing University of Science and Technology 2.School of Mechanical Engineering Nanjing University of Science and Technology

KeyWords： high-speed precision press transmission mechanism multi-body system with clearance dissipative contact characteristics nonlinear dynamic

ClassificationCode：TH122

year,vol(issue):pagenumber：2023,48(12):196-205

Abstract：

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.

Funds：

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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