文献类型：期刊文献

英文题名：Evaluation of Simplified Creep Design Methods Based on the Case Analysis of Tee Joint at Elevated Temperature

作者：Gong, Jian-Guo[1];Xia, Qi-Wei[1];Xuan, Fu-Zhen[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2017

卷号：139

期号：4

外文期刊名：JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME

收录：;EI(收录号：20172303735860);WOS:【SCI-EXPANDED(收录号:WOS:000403902100024)】；

基金：Supports from National Natural Science Foundation of China (Grant Nos. 51475167 and 51605165) are greatly acknowledged.

语种：英文

外文关键词：creep design; inelastic strain; isochronous stress strain curve; elastic-perfectly plastic (EPP)

摘要：Based on a tee joint, the simplified creep design methods of ASME code, elastic-perfectly plastic (EPP) analysis of Code Case N-861 (CC N-861) and the inelastic analysis by isochronous stress strain (ISS) curve, were evaluated and compared to nonlinear finite element creep analysis (FECA). Results indicate that both EPP and FECA lead to a greater inelastic strain than ISS curve-based results. By contrast, the ISS-based analysis induces a smaller usage fraction (damage) than FECA due to the underestimated inelastic strain. In addition, the smallest usage fraction (damage) is obtained by using EPP analysis of CC N-861 in which case the remarkable bending strain is involved.