Analytical, Numerical, and Experimental Study of the Flatwise Compression Properties of ۳D Integrated Woven Sandwich Composites

In the recent decades, special attention has been given to reinforcement of composites by three-dimensional fabrics .Three-dimensional integrated woven sandwich composites (IWSCs) consist of two woven glass fabric faces and an integrated hollow core. Pile yarns bond these two parallel faces together. In this study, a micromechanics analytical model as well as a ۳D finite element model is presented in order to predict the compressive behavior of the IWSC panels. In order to evaluate the proposed model, fabricated samples were subjected to flatwise compression tests. The results show that the models reasonably predicted the compression strength and there is a good agreement between the experimental data and model predictions.