文献类型：期刊文献

英文题名：Cyclic plasticity behaviors of steam turbine rotor subjected to cyclic thermal and mechanical loads

作者：Zhu, Xuanchen[1];Chen, Haofeng[1,2];Xuan, Fuzhen[1];Chen, Xiaohui[3]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Univ Strathclyde, Dept Mech & Aerosp Engn, Glasgow GL 1XJ, Lanark, Scotland;[3]Northeastern Univ, Sch Control Engn, Qinhuangdao 066004, Peoples R China

年份：2017

卷号：66

起止页码：243

外文期刊名：EUROPEAN JOURNAL OF MECHANICS A-SOLIDS

收录：;EI(收录号：20173204020042);WOS:【SCI-EXPANDED(收录号:WOS:000412254300019)】；

基金：The authors gratefully acknowledge the support of East China University of Science and Technology and the University of Strathclyde during the course of this work.

语种：英文

外文关键词：Cyclic thermal-mechanical load; Linear matching method; Steam turbine rotor; Shakedown failure diagram; Ratchet failure diagram

摘要：In this paper, shakedown and ratchet analyses are performed to investigate the cyclic plasticity behaviors of the steam turbine rotor subjected to cyclic thermal and mechanical loads by employing Linear Matching Method (LMM). Traditionally, the shakedown or ratchet analysis mainly focus on the structure under general cyclic loading condition composed by constant mechanical load and cyclic thermal load, but the investigated steam turbine rotor here is subjected to cyclic mechanical load and cyclic thermal load that vary in phase and out of phase throughout the practical operation load cycle. The failure behaviours of structure under practical operation load cycle is studied and discussed. The novel shakedown and ratchet failure diagrams are plotted by calculating different combinations of cyclic mechanical load and cyclic thermal load. The innovative equation to acquire plastic strain range of the structure under steady state cycle is fitted, which is vital for low cycle fatigue (La) assessment. Moreover, detailed stepby-step inelastic analyses are also performed to verify the applicability and effectiveness of the limit boundaries calculated by the LMM. All the investigations demonstrate that the proposed LMM technique is capable of handling practical industrial application with complicated cyclic loads. (C) 2017 Elsevier Masson SAS. All rights reserved.