Compressive failure and kink-band formation modeling

To increase the use of polymeric structural composites, a major issue is to properly account for intra-laminar failure mechanisms, such as fiber kinking induced under compression. We propose new continuum damage model that can predict response at ply level. The based on previous structure tensor-based UD-plies. A novel feature compressive UD-ply macroscale includes effect misalignment shaped kink-band resolved sub-scale. Concepts computational homogenization are used include fiber-shear calibration adapted either formation or shear-splitting depending off-axis loading. Finally, validated laminate level against experimental data OHC-tests available in literature. good agreement found predicted strength values and observed fracture patterns laminates. size experienced when different hole sizes tested also addressed.