Parametric Instability of Woven Fiber Laminated Composite Plates in Adverse Hygrothermal Environment

M. K. Rath^1, and M. K. Dash¹

¹Department of Civil Engineering, IGIT, Sarang, Odisha (INDIA)

Cite this paper:
M. K. Rath and M. K. Dash. Parametric Instability of Woven Fiber Laminated Composite Plates in Adverse Hygrothermal Environment. American Journal of Mechanical Engineering. 2014; 2(3):70-81. doi: 10.12691/ajme-2-3-4

Abstract

The present paper deals with the parametric instability of woven fiber laminated composite plates subjected to in plane periodic loadings in hygrothermal environment. The effects of various parameters like increase in number of layers, aspect ratios, side-to thickness ratios, static load factors, ply-orientations, lamination angle and the degree of orthotropy of simply supported composite plates at elevated temperatures and moisture concentrations on the principal instability regions are investigated using finite element method using Bolotin’s approach. The effects of transverse shear deformation and rotary inertia are used to study the anti-symmetric angle-ply rectangular plates. The onset of instability occurs earlier and the width of dynamic instability regions increases with rise in temperature and moisture for different parameters.

Keywords:
parametric instability static load factor orthotropic angle-ply hygrothermal environment lamination sequence

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