- M.Tech, Department of Mechanical Engineering, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India
- Professor, Department of Mechanical Engineering, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India
Laminated composites have a large application in engineering. The work done in this study is to see the free vibration response of graphite epoxy composite square plate subjected to different boundary conditions. Finite element analysis has been done on the software ANSYS. The results obtained by the simulation have been compared with those obtained from a published data obtained by semianalytical solution. It is observed that the solutions through ANSYS and that obtained through analytic solution are in good agreement and hence we see that this can be a valid method for simulating the problem. The analytic solution to this problem is complex and time consuming, so we suggest this approach which gives faster and reasonably accurate solution to the problem. The boundary conditions taken from the reference data are SSCC, SSCS, SSSS and SSCF and the ply taken is a cross ply with 0/90 lay. Further we see how the 1st mode natural frequency depends upon the area of the cutout. For a relative study we take readings for square, pentagonal, hexagonal, and circular shape cutout. For this we investigate different standard ply types with one of the above boundary conditions. Boundary condition taken is SSCS and the ply-types SP, QI, CP, and AP. Optimization has been carried out by selection of appropriate interpolation function for the data points as shown in the graphs. Then Genetic Algorithm is used to determine corresponding area to minimum and maximum frequency. Mode shapes can be extracted to see the deformation associated with particular modes. It can be utilized for placement of constraints on the structure.
Keywords: FEA, laminated composite plate, ANSYS, deformation theory, modal Analysis
[This article belongs to Journal of Experimental & Applied Mechanics(joeam)]
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|Received||April 12, 2021|
|Accepted||April 20, 2021|
|Published||April 26, 2021|