摘要
在波传播分析方法基础上,采用一种改进傅立叶级数的方法建立了弹性约束边界条件下圆柱壳结构模态分析模型,结合模态叠加理论,给出了圆柱壳结构在任意径向点力激励下的振动响应。通过与商业分析软件ANSYS的结果比较验证了本文方法的高效性与精确性,随后详细分析了边界约束刚度对圆柱壳结构自由振动特性和结构振动响应的影响,并给出了刚度影响的一般性规律。
Based on the wave propagation approach, combined with an improved Fourier Series method, the modal analysis model for the cylindrical shell structure is developed. Modal superposition theory is subsequently employed to obtain the vibrational responses of the cylindrical shell subjected to the any radial excitation. Through the comparison with results from commercial software ANSYS, the effectiveness and accuracy of the current method is validated. Then the effect of the boundary restrain stiffnesses on the free vibration as well as the dynamic response of the cylindrical shell are analyzed, and the general rule for the effect of stiffness is also presented.
出处
《振动工程学报》
EI
CSCD
北大核心
2009年第6期608-613,共6页
Journal of Vibration Engineering
关键词
圆柱壳
波传播分析法
弹性约束边界
结构导纳
cylindrical shell
wave propagation approach
general boundary conditions
mobility
