文献类型：期刊文献

英文题名：A unified direct method for ratchet and fatigue analysis of structures subjected to arbitrary cyclic thermal-mechanical load histories

作者：Ma, Zhiyuan[1];Wang, Xiaoxiao[1];Chen, Haofeng[1,2];Xuan, Fu-Zhen[2];Liu, Yinghua[3]

机构：[1]Univ Strathclyde, Dept Mech & Aerosp Engn, James Weir Bldg,75 Montrose St, Glasgow G1 1XJ, Lanark, Scotland;[2]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[3]Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China

年份：2021

卷号：194

外文期刊名：INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES

收录：;EI(收录号：20204709509724);WOS:【SCI-EXPANDED(收录号:WOS:000636790100009)】；

基金：The authors gratefully acknowledge the supports from the National Natural Science Foundation of China (51828501), the Higher Education Discipline Innovation Project (111 Project) under the funding code B13020, University of Strathclyde, East China University of Science and Technology and Tsinghua University during the course of this work.

语种：英文

外文关键词：Ratchet; Low cycle fatigue; Direct methods; Linear Matching Method; Unified Procedure for Fatigue and Ratchet Analysis

摘要：In this paper, the distinction between material ratchetting and structural ratchetting is clarified, and the concept of constant life diagram is extended to depict low cycle fatigue life boundary in structural design. To provide a novel one-stop solution for structural fatigue and ratchetting problems, a Unified Procedure for Fatigue and Ratchet Analysis (UPFRA) has been proposed. The UPFRA has been successfully applied to two different engineering structures considering complex geometry and temperature-dependent material properties. By comparing the results with ABAQUS step-by-step inelastic analysis, the UPFRA has been verified to be a robust engineering tool with great accuracy, usability, and efficiency.