Application of Rough Set Theory in Stochastic Fatigue Analysis of Vehicle Frame

被引：0

作者：

Zhao, Lihui ^{[1
]}

Liu, Changhong ^{[2
]}

机构：

[1] Shanghai Univ Engn Sci, Automot Engn Coll, Shanghai, Peoples R China

[2] East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai, Peoples R China

来源：

FRONTIERS OF ADVANCED MATERIALS AND ENGINEERING TECHNOLOGY, PTS 1-3 | 2012年 / 430-432卷

关键词：

Fatigue; random variable; rough set; finite element method;

D O I：

10.4028/www.scientific.net/AMR.430-432.1814

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Considering the up-down deflection of vehicle frame as a random variable when a car runs unsteadily, the alternating stress cased by deflection is random. The probability density function is determined by date of the alternating stress acting on the frame. Using the concepts of upper and lower approximation in the rough set theory and confidence degree, random parameters of vehicle frame can be transferred into certain interval values. When the confidence degree took a value from 0 to 1, a series of intervals between the upper and lower approximation are determined respectively. With the algorithm of the interval operation, a method of fatigue analysis is put forward.

引用

页码：1814 / +

页数：2