文献类型：期刊文献

英文题名：Equivalent conversion of different multiaxial stress rupture criteria for creep materials based on skeletal point stresses

作者：Zhang, Kun[1];Zhu, Wen-Bo[1];Tan, Jian-Ping[1,2];Zhang, Yu-Cai[3];Zhang, Cheng-Cheng[4];Gong, Cong-Yang[4];Zhang, Xian-Cheng[1,2];Tu, Shan-Tung[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[2]Shanghai Inst Aircraft Mech & Control, Shanghai 200092, Peoples R China;[3]China Univ Petr East China, Coll Chem Engn, State Key Lab Heavy Oil Proc, Qingdao 266580, Peoples R China;[4]AECC Commercial Aircraft Engine Co Ltd, Shanghai Engn Res Ctr Commercial Aircraft Engine, Shanghai 201108, Peoples R China

年份：2024

卷号：310

外文期刊名：ENGINEERING FRACTURE MECHANICS

收录：;EI(收录号：20240125493);WOS:【SCI-EXPANDED(收录号:WOS:001312378300001)】；

基金：This work is financially supported by Projects of the National Natural Science Foundation of China (521130511, 11502082, 52075174, 51875203) and by Shanghai Gaofeng Project for University Academic Program Development.

语种：英文

外文关键词：Multiaxial creep; Multiaxial stress rupture criterion; Equivalent conversion; Skeletal point; Principal stress sign

摘要：Multiaxial creep life prediction of components has been challenging. To cope with the challenge, efforts have been made to develop suitable multiaxial stress rupture criteria (MSRC) based on representative stress concept. Of all MSRCs, the ones due to Sdobyrev and Hayhurst-Leckie (denoted as SHL MSRC), and to Cane (denoted as Cane MSRC) are commonly-used. In this work, the equivalent conversion between the SHL MSRC and the Cane MSRC is investigated based on skeletal point stresses. Equivalent conversion formulae are proposed based on the skeletal point stresses of circumferentially-notched tension (CNT) specimen, and then validated by comparison with the experimental data available in the literature. The equivalent conversion formula between the two MSRCs is found to be dependent on the signs of principal stresses. Therefore, different conversion formulae should be chosen depending on the signs of principal stresses. Afterwards, the applicability of different equivalent conversion formulae is demonstrated for the CNT specimen when skeletal point stresses are available, and for creep crack growth specimen when skeletal point stresses are not available. Finally, the equivalence of the two MSRCs is discussed.