高速軟体衝突によるAl合金の変形およびCFRPの損傷発生における飛翔体形状の影響

抄録

Foreign object damage (FOD), e.g. a bird strike, is seriously damaging event during flight operations of aviation. For simulating bird strike, soft-body impact test is investigated and gelatin is used as the projectile material traditionally. However, the effect of projectile shape on the soft-body impact test results has not been sufficiently established. In this study, a cantilever target made from aluminum alloy and carbon fiber/epoxy composite were used, and experiments and FEM simulations were conducted to investigate the effect of the projectile shape. The projectile shape should affect impulse and/or work immediately after impact, and it affects the plastic deformation around the impact point of aluminum alloy specimen. And the projectile shape should affect the interlaminar shear stress around the impact point and edge of specimen, and affects the delamination of carbon/epoxy composites specimen.