Analysis of Impact on Soft Soil and Its Application to Aircraft Crashworthiness

摘要: Abstract The current crashworthiness design criteria only address crash impacts on rigid surfaces. However, accident statistics indicate that up to 80 percent of civil and military aircraft crashes occur soft soil water. There is very little data soil. development the model an important issue in impact simulation vehicle/aircraft crashworthiness. In this paper, a finite element developed. validated using available test data. Sphere cone drop tests were modelled MSC.Patran software. aluminium impactors are Belytschko-Lin-Tsay four node shell elements, close agreements obtained between experimental analytical results tests. A airplane generated used for An actual at NASA Impact Dynamics Research Facility simulated having ...