315 チューブハイドロ加工法のモデル化について

概要

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Tube hydro forming processes are composed of multiply stages such as bending, springback, pre-forming and hydro forming. In this paper, the authors described the FEM modeling methods and simulated the multi-stage tube bending and multi-stage tube hydro forming processes sequentially using LS-DYNA. The effects of previous stages on the results of hydro forming are detail investigated by numerical experiments. Furthermore, the optimal forming parameters are estimated using a general optimization program AMDESS.