低温轴流式止回阀的疲劳寿命分析  

Fatigue Life Analysis of Low temperature Axial Flow Check Valve

作　　者：谭术洋[1] Tan Shuyang

机构地区：[1]中国核动力研究设计院,成都610213

出　　处：《机械制造》2020年第8期18-22,95,共6页Machinery

摘　　要：低温轴流式止回阀是航空航天液氢管道中的重要控制件。通过有限元方法对低温轴流式止回阀进行了疲劳寿命分析,在分析中,得到了阀门的稳态温度场,以及多种动态载荷综合作用下的等效应力响应历程。应用临界损伤平面法对等效应力响应重新组合,并对平均应力进行修正,最终计算得到低温轴流式止回阀阀体和阀座的疲劳寿命。The low-temperature axial flow check valve is an important control part in the aerospace liquid hydrogen pipeline.The fatigue life of the low-temperature axial flow check valve was analyzed by the finite element method.In the analysis,the steady-state temperature field of the valve and the equivalent stress response history under the combined action of various dynamic loads were obtained.The critical damage plane method was used to reconfigure the equivalent stress response,and the average stress was corrected.Finally,the fatigue life of the valve body and valve seat of the low-temperature axial flow check valve was calculated.

关 键 词：止回阀 疲劳寿命 分析 

分 类 号：TH134[机械工程—机械制造及自动化]