Simulation of the Residual Stress and Analysis of Whole Stability under Its Influence
The distribution of the residual stress of cold- formed thin-wall steel members is particular. Now in calculating the reliable capacity of carrying load of cold-formed thin-wall steel members, there has not yet been a proper method for directly considering the influence of the residual stress. With the cold- formed thin-wall crimping angle steel taken as specific object in this study as well as assumed to be ideal elastic-plastic body, their finite modular models are set up in ANSYS. According to the tested results and the distributing rules of residual stress, the models are established close to the factual data, and also the initial stress file is set up that can describe the magnitude and distribution of the residual stress. The file has two features: first, it is likely to find out about the rules of the cold-steel residual stress varying in the direction of thickness by using the values of residual stress at some integral points in thickness direction of a specified model; second, it is applicable to simulate various distributions of residual stress. Considering both residual stress and initial out-of-straightness, the ultimate load of the member can be worked out by introducing the initial stress file into the stability analysis of ANSYS.
thin-walled section steel residual stress whole stability ANSYS software
Huachen Liu
College of City Construction, Wuhan University of Science and Technology, China
国际会议
2006现代科技国际研讨会(The International Workshop on Modern Science and Technology in 2006)
北京
英文
538-541
2006-04-01（万方平台首次上网日期，不代表论文的发表时间）