Penetration simulation for uncontained engine debris impact on fuselage-like panels using LS-DYNA

Modeling and simulation requirements for uncontained engine debris impact on fuselage skins are proposed and assessed using the tied-nodes-with-failure modeling approach for penetration. A finite element analysis is used to study the penetration of aluminum plates impacted by titanium impactors in order to simulate the effect of such uncontained engine debris impacts on aircraft fuselage-like skin panels. LS-DYNA is used in the simulations to model the impactor, test fixture frame and target barrier plate. The effects of mesh refinement, contact modeling, and impactor initial velocity and orientation are studied using a configuration for which limited test data are available for comparison.