Two-scale modeling of high-velocity fragment GFRP penetration for assessment of ballistic limit

摘要: Abstract The present paper deals with the ballistic testing and numerical modeling problems of fragment penetration glass fabric/epoxy-phenolic (GFRP) laminates. Two laminates different thickness (1.95 3.90 mm) were subjected to impact 6.35 mm dia steel sphere as a simulator at velocities get curves. There developed continuum-based model (CBM) microstructural (MSM) GFRP in two finite element codes (AUTODYN-3D LS-DYNA). CBM is anisotropic body fiber-dominated failure mechanics. advantages this include short CPU time good prediction limit velocity use only free parameters be determined from preliminary dynamic experiments. MSM has geometrically accurate structure assumption isotropy simple criteria constituents (fiber bundles matrix) not limits, but also describe details damage mechanisms simulation results showed correlation experimental data terms curves internal material damage.