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Volume 2 - Summer and Autumn 2014                   ijmt 2014, 2 - Summer and Autumn 2014: 29-41 | Back to browse issues page

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Beigi A, Edalat P, Khedmati M R, Fadavi M. A numerical investigation into the crack effects on the natural frequencies of the plates. ijmt 2014; 2 :29-41
URL: http://ijmt.ir/article-1-296-en.html
A numerical investigation into the crack effects on the natural frequencies of the plates
Ali Beigi1 , Pedram Edalat1 , Mohammad Reza Khedmati * 1, Manouchehr Fadavi1
1- AUT
Abstract:   (6578 Views)
In the current study, the effect of such parameters as the length, position and angle of crack on free vibrations of a cracked plate was examined by finite element method. The assumed crack was internal and through and its growth was ignored. In the proposed finite element model, crack was considered as a discontinuity on the plate surface and the results were compared with the results of other studies for validation which proved its acceptable precision. The studies show that the thickness and mechanical properties of the plate do not influence the ratio of natural frequency of a cracked plate to natural frequency of an intact plate and that the other parameters change the stiffness and natural frequencies of a plate through affecting the modal shapes and stress intensity factors.
Keywords: Free vibration, Crack, Plate, Natural frequency, Finite Element Method (FEM).
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Type of Study: Research Paper | Subject: Ship Structure
Received: 2014/02/26 | Accepted: 2014/04/6
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International Journal of Maritime Technology is licensed under a

Creative Commons Attribution-NonCommercial 4.0 International License.