文献类型：期刊文献

英文题名：Analysis of the metal-to-metal contact flange joint subject to external bending moment

作者：Zhang, Lanzhu[1];Xiao, Guangkai[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Safety Sci Pressurized Syst, Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2019

卷号：233

期号：2

起止页码：234

外文期刊名：PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING

收录：;EI(收录号：20191306685550);WOS:【SCI-EXPANDED(收录号:WOS:000462091500009)】；

基金：The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the National Science Foundation of China (No. 51675183) and National key research and development program (No. 2017YFF0210400).

语种：英文

外文关键词：Metal-to-metal flange joint; bending moment; thermal loading; strength criterion; sealing criterion

摘要：Metal-to-metal contact flange joints are widely used in nuclear and petrochemical industry for severe conditions, because of the relative stability of the sealing gasket stress under complex service condition. In the present work, finite element models were used for analyzing the stress distribution of metal-to-metal contact pipe flange connection under different internal pressures, temperatures, and external bending moments to evaluate the sealing and strength performance. A metal-to-metal contact pipe flange connection device was also experimented. It was found that the results of the axial bolt force and flange hub stress obtained from the experiments were in fairly good agreement with the finite element simulations. The leakage test of metal-to-metal contact type gasket was conducted to highlight its leakage characteristics under different temperatures. The methods to determine the maximum allowable bending moment of a metal-to-metal contact flange joint according the strength criterion and the sealing criterion were analyzed. The results showed that the maximum allowance bending moment was determined by the strength criterion rather than by the sealing criterion with different thermal loadings when the initial bolt-up stress was high enough to achieve metal-to-metal contact contact.