A New Analytical Approach for Free Vibration of Membrane from Wave Standpoint

In this paper, an analytical approach for free vibration analysis of rectangular and circular membranes is presented. The method is based on wave approach. From wave standpoint vibration propagate, reflect and transmit in a structure. Firstly, the propagation and reflection matrices for rectangular and circular membranes are derived. Then, these matrices are combined to provide a concise and systematic approach to free vibration analysis of membranes. Subsequently, the eigenvalue problem for free vibration of membrane is formulated and the equation of membrane natural frequencies is constructed. Finally, the effectiveness of the approach is shown by comparison of the results with existing classical solution.

Authors:

• Mansour Nikkhah-Bahrami
• Masih Loghmani
• Mostafa Pooyanfar

Keywords:

• Rectangular and circular membranes
• propagation matrix
• reflection matrix
• vibration analysis.

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