HIGHER ORDER REFINED COMPUTATIONAL MODEL USING POST PROCESSING FOR THE TRANSVERSE SHEAR AND TRANSVERSE NORMAL STRESS IN COMPOSITE PLATES

Many researchers presented failure analysis of multilayered plates. Some researchers used Equivalent Single Layer (ESL) for their analysis. Some researchers adopted layer wise theories for failure analysis. Accuracy in estimation of transverse stresses plays a pivotal role in such analysis. Transverse stresses at the layer interface calculated from the constitutive equation gives dis continuity of stresses. As such these stresses can be precisely forecasted by applying a technique. This Technique includes integration of the 3D equilibrium equations as post processing. The principal aim of the present work is to evaluate analytically the accuracy of a higher order refined computational model with 12 unknowns in predicting the transverse shear and normal stresses. The theoretical model presented herein considers the effects of both transverse shear and normal strain/stress. This model also considers the warping of transverse cross sections. The theoretical formulations and solution method for post processing is presented in the paper. Extensive numerical results are presented and discussed. Present model with post processing could predict the transverse shear and normal stresses more accurately than the models with lower variable.