The study on airborne equipment's life prediction based on the finite element simulation under comprehensive stress

To predict an airborne equipment' lifetime with finite element simulation method, use ANSYS and Flothem, respectively, to analysis vibration stress and temperature stress, corrected by kinetic experiment; then import the results into the failure prediction software-CALCE PWA, set the intensity and duration of stress according to its' mission profile, finally get the component failure life prediction results under comprehensive temperature and vibration stress; extract the Monte-Carlo simulation data, use the single point of failure distribution fitting, fault clustering and multipoint distribution fusion method to get the board and the whole machine's lifetime and reliability prediction. The design refinement suggestion of the airborne equipment is given at the end of the conclusion.