摘要
采用Flügge壳体理论计算了薄壁圆柱壳的固有频率,为了提高计算精度,采用高斯迭代法求解计算固有频率的超越函数方程。本文计算了3种边界条件下薄壁圆柱壳的固有频率,绘制了振型图,并与NASA实验值作了对比。对比结果表明:该方法的计算结果的误差不超过4.38%。
A method for calculating the natural frequencies of thin cylindrical shells is presented;it is based on Flügge′s shell equations.Gauss′ method is exploited to calculate the transcendental function of natural frequencies which can be solved with high accuracy.Calculation results of natural frequencies are presented for different boundary conditions of thin cylindrical shells,and mode shapes are presented.Comparison with the experimental results of NASA shows that the calculating error by our method is less than 4.38%.
出处
《机械科学与技术》
CSCD
北大核心
2010年第9期1226-1229,共4页
Mechanical Science and Technology for Aerospace Engineering
关键词
薄壁圆柱壳
固有频率
thin cylindrical shells
natural frequency
