带球封圆筒外压计算长度的确定  

Determination of the Calculation length of Cylinder with Spherical Head in External Pressure

作　　者：张伟 Zhang Wei

机构地区：[1]中国石化工程建设有限公司,北京100101

出　　处：《化工设计通讯》2018年第8期137-137,共1页Chemical Engineering Design Communications

摘　　要：运用GB150图算法及有限元法分别计算带球封圆筒的临界外压pcr。结果表明,圆筒pcr与外压计算长度计入封头整个曲面深度的pcr相接近。故GB150中外压计算长度取封头曲面深度1/3是不合适的。The Pcr of cylinder with spherical head is calculated by GB150 and FEA method.Results show that the Pcr is close to the Pcr of the depth of head in length calculation.Thus,it is not appropriate to take the 1/3 depth of head in GB150 in cylinder length calculation.

关 键 词：弹性失稳 球形封头 椭圆形封头 圆筒外压计算长度 

分 类 号：TH49[机械工程—机械制造及自动化]