Predictor-Corrector Procedure for Displacements,Stresses and their Sensitivity Coefficients in Composite Panels

Abstract

A predictor-corrector procedure is presented for the accurate recovery of stresses, displacements and their sensitivity coefficients of multilayered composite panels subjected to mechanical and thermal loads. It is a post-processing procedure combined with the finite element model based on the first order shear deformation theory. The predictor procedure provides only the accurate transverse shear stresses of the panel, in the thickness direction. The corrector procedure following the predictor procedure is adopted in the present study and enhances the accuracy of displacements, in-plane stresses and transverse normal stress in the thickness direction by using the results from the predictor procedure and the finite element analysis. The corrector procedure enables the recovery of higher order distributions of the results in the thickness direction. The sensitivity coefficients of the displacements and the stresses with respect to material properties can be evaluated in a similar manner. The numerical examples are conducted to demonstrate the effectiveness of the present procedure. The basis of comparison is the exact solutions of the three-dimensional thermoelasticity equations.

Keywords

composite material predictor-corrector stress recovery sensitivity coefficient

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