Abstract: Pressure vessels have different specifications of connecting tubes. When the connecting tubes are under internal pressure, they will bear complex loading, such as bending moment, torque and so on. That will complicate the stress of the tubes, which cannot be calculated by the conventional design method. This article uses the finite element method to analyze the stress induced by the bending moment of the tube on the connection of the connecting tube and the elliptical head. It also provides references for the opening reinforcement calculation of connecting tube under similar load condition.

摘要： 这些压力容器带有不同规格的接管，接管在承受内压的同时，往往还要承受诸如弯矩、扭矩等复杂载荷条件，这就使得接管的受力变得复杂，而这又无法用常规的设计方法进行计算。本文采用有限元法对椭圆封头中接管弯矩对接管与封头连接处应力进行分析，为类似载荷条件下的接管开孔补强计算提供参考依据。