Numerical Simulation of Lightning Strike Direct Effects on Aircraft Skin Composite Laminate

[摘要] Nowadays, the direct effects of lightning to aircrafts are of great importance because of the massive use of composite materials. In comparison with metallic materials, composites present several weaknesses for lightning strike direct effects. Especially, their low electrical and thermal conductivities lead to severe lightning strike damage. The lightning strike direct effects are burning, heating, magnetic force, sparking and arcing. As the problem is complex, we investigated it gradually. A magnetohydrodynamics (MHD) model is developed to simulate the lightning strikes in order to estimate the damages on the composite materials. Then, a coupled thermal-electrical finite element analysis is used to study the interaction between the lightning arc and the composite laminate and to investigate the material degradation.

[学科分类] 计算机应用

[关键词] Composite structures;lightning multiphysics;magnetohydrodynamics;coupled thermal-electrical analysis;thermal plasmas.