文献类型：期刊文献

英文题名：A modified strain energy density exhaustion model for creep-fatigue life prediction

作者：Wang, Run-Zi[1];Zhang, Xian-Cheng[1];Tu, Shan-Tung[1];Zhu, Shun-Peng[2];Zhang, Cheng-Cheng[3]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Minist Educ, Key Lab Pressure Syst & Safety, Meilong Rd 130, Shanghai 200237, Peoples R China;[2]Univ Elect Sci & Technol China, Sch Mechatron Engn, Chengdu 611731, Peoples R China;[3]AVIC Commercial Aircraft Engine Co LTD, Shanghai Engn Res Ctr Commercial Aircraft Engine, Shanghai 201108, Peoples R China

年份：2016

卷号：90

起止页码：12

外文期刊名：INTERNATIONAL JOURNAL OF FATIGUE

收录：;EI(收录号：20161602270835);WOS:【SCI-EXPANDED(收录号:WOS:000378442400002)】；

基金：The authors are grateful for the support by National Natural Science Foundations of China (51322510, 51371082). The author Xiancheng Zhang is also grateful for the support by Special Programs for Key Basic Research of Science and Technology Commission of Shanghai Municipality (13DJ1400202 and 12JC1403200) and Fok Ying Tung Education Foundation.

语种：英文

外文关键词：Creep-fatigue; Strain energy density exhaustion; Life prediction model; Mean stress

摘要：The accumulated creep-fatigue damage is expected to be an important failure mechanism for lots of high-temperature components. The aim of this paper is to propose a modified strain energy density exhaustion model to predict the tension-hold-only creep-fatigue life. This model exhibits high accuracy due to the reasonable evaluation of creep damage. The proposed model elaborates the determinations of mean stress, stress relaxation rate and creep damage. A few existing experimental data sets of Grade 91 steel, Alloy 617 and 304 stainless steel are used to verify the prediction capacity of the present model under different temperatures and loading conditions. Results show that most of the experimental data falls into a range within a scatter band of +/- 1.5 on life. (C) 2016 Elsevier Ltd. All rights reserved.