Numerical Modeling of FMLs Subjected to a Projectile Impact
Fibre Metal Laminate structures (FMLs), due to their ability to resist impact loading and fatigue, have been increasingly used in the aircraft and aerospace industry. In this paper, using Abaqus/explicit numerical models were developed to simulate the impact behaviour of FMLs subjected to a projectile impact at intermediate velocities. FMLs were made with Al 2024-O and polypropylene fibre/polypropylene matrix (PP/PP) composites. Typical stacking configurations are Al/PP/Al, Al/PP/Al/PP/Al and Al/PP/Al/PP/Al/ PP/Al. Polypropylene was initially simulated as an elastic anisotropic material with specified failure stresses, then as an isotropic material with a specified tensile cut-off stress, Aluminium was modelled as an elasto-plastic material with a specified shear failure strain and a tensile failure cut-off stress, and the projectile as a rigid body. Simulated deformation and failure modes were compared with the corresponding experimental results. Also predicted relationships of the non-dimensional maximum permanent displacement versus normalised impact energy were compared with the related test results. Good correlation was obtained. In addition kinetic energy decay was presented to typical FMLs subjected to various impact energies.
anisotropic finite element FMLs glass fibre impact
Z.W.Guan W.J.Cantwell
Department of Engineering,University of Liverpool,Brownlow Street,Liverpool,L69 3GQ,UK
国际会议
北京
英文
2007-07-30（万方平台首次上网日期，不代表论文的发表时间）