Random Vibration Analysis of Mounting Rack for Helicopter-Borne Equipment

A random vibration analysis of mounting rack for helicopter-borne equipment was done.Firstly,the vibration environment of helicopter was described and the random plus sine vibration is transformed into pure random vibration by equivalent energy principle.Secondly,a three-dimensional model was built using software Pro-E,and the finite element model was built using software hypermesh.Lastly,analysis was done using software ANSYS.The dynamic response of a mounting rack was obtained,and the dynamic strength was verified.