机械科学与技术2012，Vol.31Issue(11)：1812-1815,4.
基于随机有限元的大型防喷阀阀体疲劳寿命评估
Evaluation of Fatigue Life of Large-scale Blowout Preventer Based on Stochastic Finite Element Method
摘要
Abstract
Blowout preventer valve in practical work suffers the random shocks of high-pressure liquid in the oil wellhead, and often fails to work due to fatigue failure. This work focused on a large-scale single ram blowout pre- venter valve, acquired and recorded the working pressure and impact frequency of the valve. The fatigue crack growth process was recorded and observed. The fatigue mechanism of the valve body was discussed. Considering that the work load of the valve body is random, the stochastic finite element method was introduced in the fatigue life analysis of the valve body. The calculation method for the valve body life under random load was proposed. The overall life evaluation and distribution of fatigue life of various parts of valve body are realized.关键词
防喷阀/疲劳寿命/随机载荷/随机有限元Key words
blowout preventer valve/fatigue life/random load/stochastic finite element method/evaluation/reliability分类
机械制造引用本文复制引用
薄纪康..基于随机有限元的大型防喷阀阀体疲劳寿命评估[J].机械科学与技术,2012,31(11):1812-1815,4.基金项目
浙江省高职（高专）专业带头人培养计划项目资助 （）
