banner.jpg 260 Geometrically Nonlinear Analyses of Laminated Composite Plates Using an Inverse Hyperbolic Shear Deformation Theory V. M. Sreeharia, and D. K. Maitib Department of Aerospace Engineering, Indian Institute of Technology, Kharagpur, India. arsvmsreehari@aero.iitkgp.ernet.in bdkmaiti@aero.iitkgp.ernet.in ABSTRACT

The present study is an attempt to develop a finite element formulation for handling nonlinear analyses of laminated composite plates. Geometric nonlinearity has been included in the Green- Lagrange sense. Governing equations are developed based on Inverse Hyperbolic Shear Deformation Theory. This theory satisfies zero transverse shear stresses conditions at the top and bottom surfaces of the plate and a nonlinear shear stress distribution through the thickness. Mathematical formulation and programming in MATLAB environment have been done. Numerical results with different parameters for linear and nonlinear case are presented.

Keywords: Laminated plates, Nonlinear, Finite element method, Shear deformation theory.

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