Free Vibration of Partially Supported Cylindrical Shells
Free Vibration of Partially Supported Cylindrical Shells
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DOI：
10.3233/sav-1995-2404
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发表时间：
1995
影响因子：
1.6
通讯作者：
S. Mirza;Y. Alizadeh
中科院分区：
文献类型：
--
作者：
S. Mirza;Y. Alizadeh
研究了脱底长度对圆柱壳结构固有频率和模态振型的影响。这类问题的一些重要应用可以在有裂纹的风扇和转子叶片中找到，这些叶片可以理想化为具有不同无支撑长度的部分支撑壳体。建立了基于小挠度线性理论的有限元模型，得到了这类问题的数值解。数值结果产生的扁壳和一些退化的情况下，与其他结果在文献中。这里介绍的计算涉及广泛的变量：材料特性，长宽比，支持条件，半径与基底比。
The effects of detached base length on the natural frequencies and modal shapes of cylindrical shell structures were investigated in this work. Some of the important applications for this type of problem can be found in the cracked fan and rotor blades that can be idealized as partially supported shells with varying unsupported lengths. A finite element model based on small deflection linear theory was developed to obtain numerical solutions for this class of problems. The numerical results were generated for shallow shells and some of the degenerate cases are compared with other results available in the literature. The computations presented here involve a wide range of variables: material properties, aspect ratios, support conditions, and radius to base ratio.