Abstract
Bird impact usually occurs during taking off or landing of flights. The aircraft structures should absorb impact energy generated due to ingested birds, ice balls or hail stone and hard body objects. etc. This paper deals with a sensitivity study of hydrodynamic bird models which is performed by numerical simulation. The analysis is carried out by using an explicit Finite Element Analysis (FEA) code AUTODYNE for impact of substitute birds on square plate of rigid Aluminum. The bird body is modeled as a porous water-air material in the shape of a Cylindrical, Cylindrical with Hemispherical ends, Ellipsoidal and Spherical. The finite element bird modeling was carried out by the use of Smooth Particle Hydrodynamics (SPH) method for materials of 10% porosity. The Stagnation and Hugoniot Pressures with time were achieved from four bird models are presented and theoretical results were compared with simulation results.
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