In this paper,the structural characteristics of the power pack in dual-power high-speed multiple-unit trains were present-ed.The finite element model of the power pack frame was established using HyperMesh,and the static strength and fatigue strength con-ditions of the power pack frame were determined based on EN 12663-1.The static strength of the power pack frame structure was evalu-ated using Von mises stress theory,and the welding fatigue strength according to DVS 1612.ANSYS software was utilized for free mode analysis of the power pack frame,while a dynamics model was developed on the basis of the double-layer vibration isolation theory.Vi-bration intensity of the power pack was calculated following ISO 10816-6,and vibration tests were conducted on the power pack frame in accordance with ISO 8528-9.Through simulation analysis and vibration tests on the power pack frame,the results show that the power pack frame satisfies the design requirements specified by relevant standards.
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