抄録
Then system of shock impact test by using airsoft rifle is developed to evaluate the design technology of anti-bird strike structure of airplane. Simple ball bullet is shot to specimen in the test by the airsoft rifle and stress response in load cell of the test system is evaluated by the modified Hertz contact theory and the wave equation which are used to analyse the viscoelastic characteristics of the specimen. In the results of experiment, the obvious relationship between quasi-static and impact responses of specimen is observed subjectively, and the effect of hardening by the impact is obvious in the results of muscles of chicken. The evaluated viscoelastic relationship is applied to simulate the impact test by using LS-DYNA with fundamental viscoelastic constitutive equation and the material parameters derived from the impact test, and the well similar behaviour has been simulated by the constitutive equation.
