Finite Element Analysis of Web Crippling Strength for Cold-Formed Stainless Steel Channels with Web Opening Subjected to ETF Loading

• Main Authors: Tu-wen ji, 杜文吉
• Other Authors: 林新華
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/35177495580109969257

碩士 === 明新科技大學 === 土木工程與環境資源管理系碩士班 === 102 === This study is to investigate the web crippling of cold-formed stainless steel channel sections with web holes under the end two-flange (ETF) loading condition based on finite element analysis(FEA) methods.The FEA results are compared with the previos experimental results. The web holes of test specimens were located at mid-depth of the webs with the supports, and the flanges of channel sections were not fastened. There are 35 test specimens made of austenitic type 304 stainless steel which were designed with different web slenderness ratio, different web hole diameters, different distances between web holes and support width. ABAQUS finite element software was performed to validate the analytical model by comparing the analysed result with test data. Results are compared with the North American Specification and proposed strength reduction factor by previous researcher.It shows the strength reduction factor varies under different loading conditions In this study, the analyzed results have an accuracy of up to 97% at compared with the experimental results.It shows that the major affecting factor for cripping strength of the cold-formed stainless steel with web holes are the hole size, followed by the distances between web hole and support width. The results of this study shows that ABAQUS finite element method can effectively predict structural behavior and web crippling strength of cold-rolled stainless steel channel sections with web openings.