文献类型：期刊文献

英文题名：Behavior of flange joints under combined internal pressure and thermal loading: The case of using metal-to-metal contact type gaskets

作者：Ma, Kai[1]; Zhang, Yi[1]; Zhang, Lanzhu[1]; Guan, Kaishu[1]

机构：[1] Key Laboratory of Safety Science of Pressurized System, Ministry of Education School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China

年份：2013

卷号：2

外文期刊名：American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP

收录：EI(收录号：20141017425861)

语种：英文

外文关键词：Finite element method - Nuclear industry - Chemical industry - Metals - Pressure vessels - Thermal load - Flanges - Gaskets - Thermal expansion

摘要：In a bolted flange joint, metal-to-metal contact type gasket takes over only part of the bolt load to achieve seating stress, and the additional bolt load is transmitted to the metal-to-metal contact to compensate for the unloading effects due to internal and external loadings. Due to this advantage, flange joints with metal-to-metal contact type gaskets are gradually used in chemical industry, nuclear power industry, etc. A three-dimensional nonlinear finite element model is developed to highlight the complex behavior of the flange joint with metal-to-metal contact type gasket under combined internal pressure and thermal loading. Despite of the common perception that the gasket stress in the metal-to-metal contact type gasket stays constant, reduced gasket stress is concluded due to flange rotation and joint thermal expansion. Copyright ? 2013 by ASME.