Shock Analysis of Turbo Shaft Engine Accessory Gearbox Housing

Turbo shaft Engine accessory gearbox Housing should be designed to endure shock load while Engine operates. MIL-STD-810H provides basic guideline for shock load condition on aircraft structure. In this study, by Modal Superposition method, transient analysis and response spectrum analysis of shock load condition specified in MIL-STD-810H were performed on Gearbox Housing. Maximum stress occurred in shock load condition and the value yield strength devided by maximum stress was Factor of Safety. Finally, Safety margin was compared with 1.25, which is from NASA Criteria “Yield Design Factor”.