Abstract
The bird strike incidents have been a problem since the start of modern aviation. It remains one of the most dangerous threat to the flight safety. Although catastrophic failure is uncommon, flight safety authorities require aircrafts to be designed to complete the flight without any harm. In addition to experimental investigation of bird strikes, finite element modeling is adopted in numerous researches on bird strike. A finite element model based on smooth particle hydrodynamics (SPH) is developed to analyze the bird strike effect on a leading edge of an aircraft wing. Since birds strike at the leading edge of the wings from different orientation, bird strike simulations are performed from various orientations. Results presented in the current work that the advancing angle of birds toward the leading edge has a minor effect on the deformation of the leading edge of an aircraft wing. The deformation behavior of the wing leading edge after bird strike is discussed in detail by presenting the results in figures. Simulations illustrated that the advancing angle of a real bird causes substantial structural deformations on wing profiles.
Highlights
Aviation industry suffers from bird strikes issues since the early times of aviation
Al6061-T4 aluminum alloy whose properties are provided in previous section is implemented in the finite element model. the bird structure is constructed as a cylindrical body with a length of 300 mm and diameter 100 mm with a semi spherical tip
In this study the effect of the bird approaching angle on the deformation of simplified wing leading edge of a commercial aircraft is investigated by means of finite element analyses
Summary
Aviation industry suffers from bird strikes issues since the early times of aviation. One of the first deadly accidents happened during an exhibition flight of Calbraith Perry Rodgers as a flock of birds strike on the aircraft causing the plane crash into the ocean in 1912. It has been a long time since the first incident of bird strike, it has been a serious problem for the flight safety. Later the Smojver et al [4] developed a finite element model and validated it with an experimental work to study bird strike on wing leading of large aircrafts. Liu et al [9] established a finite element model coupled with the SPH in addition to experimental work to design a tail leading edge structure to simulate the bird strike. There are various approaches for modeling the bird strike on wing leading edges
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