Structural Analysis of thin isotropic and orthotropic plates using finite element analysis

International Journal of Mechanical Engineering
© 2017 by SSRG - IJME Journal
Volume 4 Issue 6
Year of Publication : 2017
Authors : V. J. K. Silpa, B. V. S. Raghu Vamsi, K. Gowtham Kumar
pdf
How to Cite?

V. J. K. Silpa, B. V. S. Raghu Vamsi, K. Gowtham Kumar, "Structural Analysis of thin isotropic and orthotropic plates using finite element analysis," SSRG International Journal of Mechanical Engineering, vol. 4,  no. 6, pp. 13-24, 2017. Crossref, https://doi.org/10.14445/23488360/IJME-V4I6P104

Abstract:

The strength and stability of a structural member is affected by the discontinuity and its features, namely geometry, position, and dimensions determined during the design process. It results in localization of stresses resulting in excessive plastic deformation leading to distortion. The failure mode may get transformed to distortion; or tearing; or buckling, depending on the boundary as well as loading conditions. In this work the structural response of a thin plate with a circular hole subject to various boundary conditions is studied. The response of the plate is studied by performing stress, modal and buckling analysis. The effect of parameters like d/w (hole diameter to plate width) ratio, location of the hole & support conditions on the stress concentration factor, natural frequency, mode shape and buckling load is presented for isotropic and orthotropic materials. The d/w ratio is varied over a span of 0.1 - 0.5 with an incremental step of 0.1. The study concludes that increase in d/w ratio results in increase of frequency ratio & deflection ratio which is because of decrease in the stiffness of the material. In addition that it has been observed that the stress concentration factor and buckling load factor decreased with increase of d/w ratio.

Keywords:

Finite element analysis Structural response, stress concentration factor, buckling factor, frequency ratio

References:

[1]. Nitin Kumar Jain, Analysis of Stress Concentration and Deflection in Isotropic and Orthotropic Rectangular Plates with Central Circular Hole under Transverse Static Loading, World Academy of Science, Engineering and Technology 60 2009
[2]. Kolaventi Sasi Kumar, B. V. S. Raghu Vamsi, P. N. V. Balasubrahmanyam, E. Vekateswara Rao, Frequency response analysis of a Clamped Composite Plate with a Central Circular Cutout using ANSYS, International Journal of Scientific & Engineering Research, Volume 6, Issue 3, March-2015
[3]. Shubhrata Nagpal, Nitin Jain, Shubhashish Sanyal, Stress Concentration and its Mitigation Techniques in Flat Plate with Singularities - A Critical Review, Engineering Journal, Vol. 16 Issue 1, January 2012
[4]. Hwai-Chung Wu, Bin Mu, On stress concentrations for isotropic/orthotropic plates and cylinders with a circular hole, Composites: Part B 34 (2003) 127–134, Elsevier
[5]. P.Srikanth, P.Pramod Kumar, Structural Analysis of Isotropic and Orthotropic Beams and Plates in First Order Shear Deformation Theory, International Journal of Innovative Research in Science, Engineering and Technology, Vol. 5, Issue 2, February 2016
[6]. Moon Banerjee, N. K. Jain, S. Sanyal, Stress concentration in isotropic & orthotropic composite plates with center circular hole subjected to transverse static loading, International Journal Of Mechanical And Industrial Engineering (IJMIE), Vol-3, Iss-1, 2013
[7]. Vanam B. C. L, Rajyalakshmi M, Inala R, Static analysis of an isotropic rectangular plate using finite element analysis (FEA), Journal of Mechanical Engineering Research Vol. 4(4), pp. 148-162, April 2012
[8]. Devidas R. Patil, P.G.Damle, Dr. D.S.Deshmukh, Vibration Analysis of Composite Plate at Different Boundary Conditions, International Journal of Innovative Research in Science, Engineering and Technology, Vol. 3, Issue 12, December 2014
[9]. F. O. Okafor, O. T. Udeh, Direct method of analysis of an isotropic rectangular plate using characteristic orthogonal polynomials, Nigerian Journal of Technology, Vol. 34 No. 2, April 2015, pp. 232 – 239
[10]. Ming-Hung Hsu, Vibration Analysis of Isotropic and Orthotropic Plates with Mixed Boundary Conditions, Tamkang Journal of Science and Engineering, Vol. 6, No. 4, pp. 217-226 (2003)
[11]. A text book on Theory of Plates and Shells by Stephen Timoshenko.