Modal stiffness analysis and optimization design for key position of a new material body of an amphibious vehicle

DOI:	10.11809/bqzbgcxb2023.09.027
Keywords:	amphibious vehicle; new material; body in white; dynamic stiffness; finite element
Abstract:	As the main installation and load bearing structure of turret, the modal stiffness of the seat ring is an important factor that affects the firing efficiency. In this paper, based on the Hypermesh CAE software, a finite element model of BIT (body in white) of a new material of amphibious vehicle is constructed. The modal stiffness of the key position of turret seat is calculated and analyzed, the acceleration frequency response curve (IPI curve) is obtained, and the finite element model is verified by modal stiffness test. Based on the comparative analysis of modal stiffness characteristic curves, the modal stiffness of the seat ring is significantly improved by the optimum design of the weak modal stiffness points, which provides an important theoretical basis for the design of new material BIT of amphibious vehicle.
Published:	2023-09-28
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