Bridging the Effect of the Impactor Head Shape to the Induced Damage during Impact at Low Velocity for Composite Laminates

The present paper presents an investigation and analysis study of the effect head shapes impactor on damages observed during low-velocity impact T700/Epoxy composite laminate. Two types impactors were investigated: hemispherical flat-face. A new criterion based LARC05 damage model was linked as a LARC_VUMAT subroutine to simulate explore effects form shape through three-dimensional finite element model. To properly analyze problem, history time mechanical responses, such forces, bending, principal, residual stresses, are highlighted assessed. Additionally, comparison with experimental data found in literature performed check validity accuracy considered occurring plates is illustrated for each shape. response curves all kinds presented simulations perfect agreement experiments. proposed VUMAT efficient prediction fiber kinking, matrix cracking, splitting, tension laminate, more importantly, it easy implement other materials reproducibility assured.