Free vibration analysis of point-supported plates by vibration testing technique |
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| Affiliation: | 1. Department of Aerospace Engineering, Sharif University of Technology, Tehran, Iran;2. Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada;3. Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran;1. Division of Computational Mathematics and Engineering, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;2. Faculty of Civil Engineering, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;3. Advanced Materials and Structures Laboratory, VNU-Hanoi, University of Engineering and Technology, 144 Xuan Thuy, Cau Giay, Hanoi, Viet Nam;4. Infrastructure Engineering Program, VNU-Hanoi, Vietnam-Japan University (VJU), My Dinh 1, Tu Liem, Hanoi, Viet Nam |
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| Abstract: | Sweep sine-wave testing is applied for the identification of dynamic characteristics of a four-point-supported square plate with free edges. The idea behind the method is to make use of free vibration time-response data such as acceleration to determine the natural frequencies and associated mode shapes. To compare with the theoretical results, detailed experimental results have been obtained for the various support locations lying at specified positions along the plate diagonals. The natural frequencies and associated mode shapes for the first five modes have been predicted, and the variation of natural frequencies with various support positions have been analyzed for the first symmetric and antisymmetric modes. It is found that the experimental results are generally in reasonable agreement with the theoretical ones. |
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