Aiming at the characteristics of forming difficulty for the Semimonocoque, a finite element analysis on the precision forging was conducted by using rigid-plastic finite element method based on the DEFORM-3D software. The metal flow law during the forging process was studied. The equivalent stress, strain distribution and load-stroke curve were analyzed. The numerical simulation results were used to optimize the die structure and technological parameters. The research results were verified valid by experiment.
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