带动板的TPEE与楔形机构组合式缓冲器静压试验仿真研究
魏延刚1,2，武树暄1，司马娅轩1，张媛1，宋亚昕3
（1.大连交通大学 机械工程学院，辽宁 大连 116028；2.大连科技学院 机械工程学院，辽宁 大连 116052；3.北京多邦汇科轨道车辆装备技术有限公司，北京 101100）
摘要：为了提高缓冲器的能量吸收率和改善缓冲器的回弹性能，发明了一种带动板的热塑性聚酯弹性体（Thermoplastic Polyester Elastomer，TPEE）与棱锥台楔形机构组合式缓冲器，根据楔形机构和动板机构基本力学原理以及TPEE粘弹性本构关系模型，应用有限元方法对这种组合式缓冲器静压试验进行仿真研究，求解出静压试验压缩和回弹全过程中缓冲器的阻抗力、各种能量和能量吸收率，以及各元件的应力等。有限元仿真结果表明，有限元方法计算出的阻抗力和能量吸收率的结果与理论和实验相结合的方法所获得的阻抗力和能量吸收率非常接近；有限元方法计算出的等效应力结果，可为各主要元件的选材和结构优化提供重要参考。
关键词：TPEE；楔形机构；动板；摩擦损耗；能量吸收率；缓冲器
中图分类号：TH12；U463.335.1 文献标志码：A doi：10.3969/j.issn.1006-0316.2022.06.003
文章编号：1006-0316 (2022) 06-0015-07
Static Pressure Test Simulation of Draft Gear Combined Moving Plates with TPEE Elements and Wedge Mechanism
WEI Yangang1,2，WU Shuxuan1，SIMA Yaxuan1，ZHANG Yuan1，SONG Yaxin3
( 1.School of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, China；2.School of Mechanical Engineering, Dalian University of Science and Technology, Dalian 116052, China；3.Beijing Duobang Huike Railway Vehicle Equipment Technology Co., Ltd., Beijing 101100, China )
Abstract：A draft gear combined moving plates with TPEE and frustum wedge mechanismis was invented to enhance the energy absorptivity and to improve the rebounding performance of draft gears. According to kinematics principle of wedge mechanism and moving plates and the viscoelastic constitutive relationship model of TPEE, the static pressure test simulation of the draft gear is carried out by using the finite element method. Then the impedance force, various energy and energy absorption rate of the draft gear and the stresses of all components in the whole process of compression and rebound of static pressure test are solved. It shows that the results of impedance force and energy absorption rate calculated by finite element analysis are very close to those acquired by the method of combining theory and experiment. The equivalent stress results of finite element analysis can provide an important reference for the material selection and structural optimization of main components.
Key words：TPEE；wedge mechanism；moving plates；friction lose；energy absorptivity；draft gear
———————————————
收稿日期：2022-01-04
基金项目：2015年辽宁省教育厅科学技术研究项目（L2015099）
作者简介：魏延刚（1961－），山东莒南人，硕士，教授，主要研究方向为机械传动、机械产品数字化仿真及优化设计，E-mail：weiyg@djtu.edu.cn。
设为首页 | 加入收藏 | 免责条款
《机械》杂志版权所有 Copyright©2008-2012 Jixiezazhi.com All Rights Reserved
电话：028-85925070 传真：028-85925073 E-mail：jixie@vip.163.com
地址：四川省成都锦江工业开发区墨香路48号 邮编：610063
Powered by PageAdmin CMS