压力容器开孔接管区的有限元分析和实验研究

Finite Element Analysis and Stress Test for Opening Tubing Connection on Pressure Vessels

根据对压力容器正交和切向开孔接管区进行的有限元分析,获得容器筒体、接管及其连接部位的应力分布结果,利用电阻应变测试技术进行现场测试。结果表明,压力容器开孔接管产生明显的应力集中,各类应力的最大值发生在接管与筒体连接处,是筒体失效的危险区域;与压力容器正交开孔接管相比,压力容器切向开孔接管的应力分布更趋复杂,有更明显的应力集中。

According to the finite element analysis of orthogonal and tangential opening tubing region on pressure vessels,the stress distribution of vessel,connection tube and their connection region are obtained,and the field testing is done with technology of strain gage.The results show that the obvious stress concentration is produced on the opening connection,the maximum value of stresses occurs in the connection position of tubing connetion and vessel,where the failure of vessel takes place easily.Contrasted wi...