文献类型：期刊文献

英文题名：A modified stress field intensity approach for fatigue life prediction of components

作者：Zhao, Peng[1];Lu, TianYang[1];Gong, Jian-Guo[1];Xuan, Fu-Zhen[1]

机构：[1]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety MOE, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2020

卷号：190

外文期刊名：MATERIALS & DESIGN

收录：;EI(收录号：20200708165435);WOS:【SCI-EXPANDED(收录号:WOS:000524744700001)】；

基金：The authors are grateful for the supports provided by National Natural Science Foundation of China (51475168, 51605165), and Fundamental Research Funds for the Central Universities (Grant Nos.: 222201814021, 50321071917005).

语种：英文

外文关键词：Fatigue; Life prediction; Stress field intensity; Multi-axial stress state

摘要：In the present paper, a modified fatigue life model is proposed based on stress field intensity (SFI) approach, where the average weight function is introduced as the denominator of the traditional model and a modified definition of the fatigue zone is given using the concept of characteristic stress. Combined with finite element analysis, the fatigue life predictions of a central hole specimen from the literature and the notched plate specimens/a simulated engineering component conducted by the authors are carried out by the new model. Results indicate that the predicted lives are in good agreement with the experimental results and the modified stress field intensity approach is convenient for practical use. (C) 2020 The Authors. Published by Elsevier Ltd.