Abstract:
Airborne equipment has extremely high weight requirement. The topology optimization and structural configuration design of an installation rack of airborne electronic equipment are carried out by finite element analysis method in this paper. The weight index, modal frequency and stress response values under random vibration conditions of the installation rack after the lightweight design are compared and analyzed. After topology optimization, the weight of the installation rack has reduced by 21.23%, the fundamental frequency has reduced by 5.66%, and the maximum stress response value of random vibration at the installation hole has increased by 2%. However, the maximum stress value is still lower than the yield limit of the corresponding material, which has sufficient strength margin. The analysis results have proven the feasibility of this lightweight design method.