Progressive Axial Crushing of Composite Laminates: A Comparison Between LS-DYNA Continuum Damage Models

摘要

We are presenting a detailed comparison of well-established intra-laminar materialdamage models to assess predictive capabilities and the influence of additional nonphysicalparameters with regards to compressive damage behavior and axial crushingof Carbon Fiber Reinforced Polymers (CFRPs) structures. Implemented in thecommercial explicit Finite Element (FE) software LS-DYNA, three material modelsMAT058, MAT219 and MAT261 are applied to a range of characteristic tests thatlead towards the axial crushing of quasi-isotropic IM7/8552 CFRP laminates. Thefindings of this study aid in fully understanding the efficient use of built-in intralaminardamage models for CFRP structures under compressive loading. It furtherleads towards robust and reliable calibration schemes to determine typically usedparameters in crashworthiness simulations.