Affiliation:
1. School of Mechanical and Power Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China e-mail:
Abstract
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.
Funder
National Natural Science Foundation of China
Subject
Mechanical Engineering,Mechanics of Materials,Safety, Risk, Reliability and Quality
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