内压容器壳体上矩形大开孔接管三维有限元分析与强度计算

运用三维有限元分析方法 ,对内压容器壳体上有内伸矩形大开孔接管和无内伸矩形大开孔接管结构进行应力分析 ,得到了接管部位的应力分布规律。对比两种结构的分析结果 ,并按照分析设计原理对两种结构进行了强度评定。结果表明 ,带有内伸接管结构的容器强度基本能满足安全要求 ,且比无内伸接管容器更安全

Three-Dimension Finite Element Analysis and Strength Calculation of the Rectangle Big-Opening Nozzles on the Shell of an Internal Pressure Vessel

The stress analyses were made of the rectangle big-opening nozzles with and without internal elongation on the shell of an internal pressure vessel using 3D finite element method, and the stress distribution law between the nozzle location was derived. The strength assessment of the two nozzle structures was made based on the comparison between the analysis results of the two nozzle structures and the analysis deign principle. The result shows that the strength of the vessel with internal elongation nozzles could basically satisfy the safety requirements and was safer than that of the vessel without internal elongation nozzles.