热点应力法在高速列车设计中的应用  

The application of hot spot stress method in design of high speed train

作　　者：金立翡 张昭[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室运载工程与力学学部工程力学系,大连116024

出　　处：《计算力学学报》2013年第S1期25-28,共4页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(11172057);国家重点基础研究发展计划(2011CB013401)资助项目

摘　　要：应力可靠性预测对高速列车车体的安全设计非常重要.本文采用国际焊接学会推荐标准预测高速列车车体关键部位应力,通过热点应力法对应力集中部位表面应力进行外推.计算结果表明通过参考点外推得到的热点应力总是明显小于有限元计算的结果,并且更接近于实验值。采用两点外推法或三点外推法计算结果的差别很小.Reliable stress prediction is very important to the safety design of the high speed train body.IIW recommendation was used to predict the stresses at the key components in high speed train by the extrapolation on the surfaces of the stress concentration points in current work.The results showed that the hot spot stress based on the extrapolation of the reference stresses can be obviously decreased with comparison to the computational results from a FE analysis.Moreover,the results from two points extrapolation and three points extrapolation are very similar.

关 键 词：高速列车 有限元法 IIW推荐标准 

分 类 号：O344.1[理学—固体力学]