文献类型：期刊文献

英文题名：Shakedown analysis of pressure pipeline with an oblique nozzle at elevated temperatures using the linear matching method

作者：Gong, Jian-Guo[1];Niu, Tian-Ye[1];Chen, Haofeng[2];Xuan, Fu-Zhen[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Univ Strathclyde, Dept Mech & Aerosp Engn, James Weir Bldg,75 Montrose St, Glasgow G1 1XJ, Lanark, Scotland

年份：2018

卷号：159

起止页码：55

外文期刊名：INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING

收录：;EI(收录号：20174804453776);WOS:【SCI-EXPANDED(收录号:WOS:000424182900006)】；

基金：The authors gratefully acknowledge the support of the University of Strathclyde, the East China University of Science and Technology, the Natural Science Foundation of China (Grants No.: 51475167, 51605165) and the 111 project during the course of this work.

语种：英文

外文关键词：Linear matching method (LMM); Oblique nozzle; Structural integrity; Shakedown

摘要：There are many power plant components operating at elevated temperatures, subjected to the combined mechanical and thermal loading conditions. The shakedown problem is an important topic for the safe operation of these high temperature components. This work mainly addresses the shakedown analysis of the pressure pipeline with an oblique nozzle at elevated temperatures using the Linear Matching Method (LMM). Parametric studies on main factors affecting the shakedown boundary are conducted. The results indicate that the LMM analysis tool is adequate to identify the shakedown boundary of the component, verified by the ABAQUS step-by-step analysis. Regarding the angle of the oblique nozzle, the ratchet limit is enhanced with the increasing angle, while the reverse plasticity limit increases until a maximum value is reached, and then presents a certain decrease. This implies that designers should make some compromises on the limit load and reverse plasticity limit when determining an economic angel of the oblique nozzle. In addition, parametric studies demonstrate that the diameter-to-thickness ratios of the oblique nozzle and the main pipe have a remarkable effect on the reverse plasticity and ratchet limit of the component.