Prediction and experiment on the compressive property of the sandwich structure with a chevron carbon-fibre-reinforced composite folded core

The compressive performances of carbon-fibre-reinforced composite sandwich panels with chevron folded cores were investigated in this paper. Analytical expression based on energy approach were derived to predict their compressive elastic modulus and strength. The sandwich panels with specific fibre orientation cores were manufactured and tested to reveal the influences of fibre ply angles on the responses for compressive loading. The stiffness and strength increased distinctly with the 0° fibre orientation increments. The predictions for compressive stiffness and strength showed good agreement with the measurements, and the failure mechanisms of the structures were discussed by simulation analysis.