摘要
将修正的弹性补偿法应用到基于轴对称壳单元的有限元分析中,建立求解加肋轴对称组合壳极限载荷的计算方法。该方法通过改变壳单元和肋骨单元的弹性模量,获得一系列静力容许应力场,从而确定加肋轴对称组合壳的极限载荷。应用Fortran语言编制了有限元计算程序,算例证明本文方法有较高的效率和计算精度。
Based on axisymmetric shell element,a modified elastic compensation method is proposed to calculate the limit load of ring-stiffened axisymmetric combination shell.By varying the modulus of shell elements and stiffeners,a series of statically admissible stress fields are established and the limit load of ring-stiffened axisymmetric combination shell is determined.A computational procedure is developed base on Fortran.The examples demonstrate the efficiency and accuracy of the procedure.
出处
《舰船科学技术》
2011年第11期47-50,共4页
Ship Science and Technology
关键词
加肋轴对称组合壳
极限载荷
修正的弹性补偿法
轴对称壳单元
ring-stiffened axisymmetric combination shell
plastic limit load
modified elastic compensation method
axisymmetric shell element
