机械科学与技术2017，Vol.36Issue(2)：207-212,6.DOI:10.13433/j.cnki.1003-8728.2017.0208
循环系数修正的膜片弹簧疲劳寿命分析
Study on Fatigue Life of Diaphragm Springs by using Cycle Ratio Modification
朱茂桃 1刘涛 1何松霖 1郭佳欢 2秦洋1
作者信息
- 1. 江苏大学汽车与交通工程学院,江苏镇江212013
- 2. 上海萨克斯动力总成部件系统有限公司,上海201708
- 折叠
摘要
Abstract
To offer the fundamental of fatigue design of diaphragm spring,the cumulative fatigue damage theory has been used to calculate the fatigue life of diaphragm spring based on the current stress history data,and the impact of working position had been discussed.Loading on large side had been analyzed by using FEM firstly,after that the experimental results have been obtained to verify the FEM calculated results.Secondly the stress data in fatigue test condition had been calculated by using FEM,and the stress data of preloading and unpreloading were removed.With the remaining stress history data,the stress controlled fatigue damage method had been used considering the cycle ratio modification to analyze the fatigue life.To make the process easier Time Step module in Ncode Designlife had been used,the calculated result indicated that the danger point position is same as the previous literature and match with the fatigue test.The calculated accuracy of fatigue damage had been greatly improved,and the danger point position of fatigue damage can be directly calculated,besides,it can not only be used for a diaphragm spring but also for other cyclical working component.At last,the impact of working position had been discussed,which identify that when the working position is between the local maximum value point and the inflection point,and keep a distance to inflection point then a diaphragm spring can behave nonlinear as well as a longer life.关键词
膜片弹簧/有限元分析/疲劳损伤/循环系数修正/工作点Key words
diaphragm spring/finite element analysis/fatigue damage/cycle ratio modification/working position分类
机械制造引用本文复制引用
朱茂桃,刘涛,何松霖,郭佳欢,秦洋..循环系数修正的膜片弹簧疲劳寿命分析[J].机械科学与技术,2017,36(2):207-212,6.
