Power assembly suspension device and design system thereof

The invention relates to a power assembly suspension device and a design system thereof. A virtual flexible body related to a power assembly is established, and bending vibration simulation analysis is performed on the virtual flexible body to obtain a first-order bending vibration mode; the positions of a front bending vibration node and a rear bending vibration node based on the first-order bending vibration mode on the virtual flexible body are respectively used as a first initial mounting point and a second initial mounting point; judging whether the position information of the first initial mounting point and the second initial mounting point meets an impact center theoretical formula or not to obtain mounting parameters of the suspension mounting point; according to the mode, the long power assembly is regarded as a flexible body, the front suspension support installation point and the rear suspension support installation point are arranged at the bent joints of the power assembly respectively on the ba