Compressive bearing capacity and failure mechanism of CFRP–aluminum laminate column with single-channel cross section

Abstract The axial compressive bearing capacity, failure modes, and mechanisms of carbon fiber-reinforced aluminum laminate (CARALL) columns with single-channel cross sections were studied in detail. In this study, two types short CARALL specimens a 5/4 configuration first fabricated using 2024-T3 alloy different fiber orientations ([0°/90°/0°] 3 , [45°/0°/−45°] ) via pressure-molding thermal-curing forming process. then subjected to static loading tests determine their behaviors terms ultimate capacity modes. Thereafter, the user-defined FORTRAN subroutine VUMAT, which is based on ABAQUS, was used investigate mechanism proposed columns. Meanwhile, classic laminated panel mechanics theory, theoretical method predict safe designed results indicated that both strength caused by delamination layers. When an load, spread angle polymer prepregs panels had significant influence resistance interlaminar delamination. A smaller layer resulted greater Setting certain number layers angles between 0° 45° could increase toughness compression column member against shear at initial stage. Comparisons experimental, numerical, demonstrated good agreement, indicating feasible for predicting section can be applied design pillar components.