计量学报2018，Vol.39Issue(2)：187-191,5.DOI:10.3969/j.issn.1000-1158.2018.02.10
基于三参数威布尔分布的自动调整臂疲劳寿命的P-S-N曲线研究
Research on the P-S-N Curve of Fatigue Life of Automatic Brake Adjuster Based on Three Parameter Weibull Distribution
摘要
Abstract
An experimental study on the fatigue properties of automatic brake adjuster is presented.The deflection ability,failure characteristics and fatigue life were investigated.It is observed when fatigue stress is applied,middle stress concentration parts of the rectangular compression spring will produce crack.While stress level increases,the crack becomes bigger,which makes its ability to transfer torque reduced.Using the method of least squares and maximum correlation coefficient fitting of the fatigue life of automatic brake adjuster,it was shown that its fatigue life obey the three parameter of Weibull distribution.According to the three parameters in the form of power function S-N curve equation,the automatic brake adjuster under different stress P-S-N curve is setd up.The automatic brake adjuster test was compared with the theoretical fatigue limit life which shown the relative error of the two is small.关键词
计量学/疲劳寿命/P-S-N曲线/三参数威布尔分布/自动调整臂Key words
metrology/fatigue life/P-S-N curve/three parameters of Weibull/automatic brake adjuster分类
通用工业技术引用本文复制引用
罗哉,王岚晶,唐颖奇,田焜..基于三参数威布尔分布的自动调整臂疲劳寿命的P-S-N曲线研究[J].计量学报,2018,39(2):187-191,5.基金项目
浙江省自然科学基金(Y15E050053) （Y15E050053）
