摘要
运用短圆柱壳挠曲线微分方程,基于变形光滑连续条件,建立用于计算大型储罐罐壁应力的弹性分析法力学模型,推导阶梯厚度壳轴向应力的计算公式,得到详细的计算过程。采用此方法,以容积为15×104m3大型储罐为算例进行验算,并对有限单元法数值计算结果和现场实测数据进行对比。结果表明,该方法能够较精确地计算罐壁应力,可以为罐壁设计与校核提供参考。
Based on continuity and smoothness conditions of deflection on shell, the mechanical model was established using elastic analysis method for calculating shell stress distribution of large storage tank. The formulas for calculation of hoop and axial stress on stepped thickness shell were deduced by using deflection differential equation of short cylindrical shell. Taking a tank with volume of 15× 10^4 m^3 for example, the detailed calculation process of tank shell was provided based on elastic analysis method. Compared the finite element method calculation results with the testing data, the feasibility and effectiveness of the method were verified. The results show that the method can accurately calculate the stress on tank wall, and can pro- vide a reference for the design and checking of the tank wall.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第3期159-164,共6页
Journal of China University of Petroleum(Edition of Natural Science)
基金
中国石油大学(华东)自主创新科研计划项目(10CX04031A)
关键词
大型储罐
弹性分析法
应力计算
短圆柱壳
large storage tank
elastic analysis method
stress calculation
short cylindrical shell
