Finite Element Method Simulation of  Stagger Power Spinning Forming of Automobile Spoke

Abstract

Abstract:

Abstract： In order to make an indepth research on stagger spinning process of automobile spoke with three rollers, the elasticplastic finite element simulation model was established and the forming process was analyzed based on ABAQUS. The methods for imposing boundary conditions and trajectory curves of rollers were introduced. The correctness of the simulation model was verified by calculating the ratios of kinetic energy and pseudo strain energy to internal energy and by comparing simulation results with production parts by using the reverse technique and experimental measurement. The results show that the material does not produce plastic deformation in the central area of the blank contacting with tailstock. Plastic deformation distributes homogeneously in the circumferential direction of the spoke and changes in the radial direction. Thus equivalent plastic strain rings and thickness rings are formed. Plastic deformation is severe when forming curved fillet areas and outer edge regions of the spoke. Material accumulation defect is likely to occur when forming outer edge regions of the spoke. The thickness of the spoke is different along the generatrix direction, and it changes in accordance with the sine law.

Key words: automobile spoke, stagger spinning, forming, finite element method (FEM) simulation

CLC Number:

TG 306

LU Ping1a,1b,ZHANG Yunkai1a,1b,CHEN Bo2. Finite Element Method Simulation of Stagger Power Spinning Forming of Automobile Spoke[J]. Journal of Shanghai Jiaotong University, 2015, 49(01): 56-61.

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Finite Element Method Simulation of Stagger Power Spinning Forming of Automobile Spoke

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