Optimization of Boost Condition and Axial Feeding on Tube Bending and Hydro-Forming Process Considering Formability and Spring-Back

다국어 초록 (Multilingual Abstract)

Finite element simulations were performed for the sequential procedures of bending and hydro-forming of DP590
tubes in order to optimize the process parameters, in particular, the boost condition and axial feeding in
the sequential forming processes considering formability and spring-back. The effects of the material property,
including strain-rate sensitivity on formability as well as spring-back were also evaluated numerically. As for
the constitutive law, the isotropic hardening law was used along with the non-quadratic anisotropic yield
function, Yld2000-2d. Forming limit diagrams were calculated based on Hill’s bifurcation theory and the MK
theory. In order to characterize the material properties, tensile tests were performed for both the DP590
sheet and tube.

다국어 초록 (Multilingual Abstract)

Finite element simulations were performed for the sequential procedures of bending and hydro-forming of DP590
tubes in order to optimize the process parameters, in particular, the boost condition and axial feeding in
the sequential forming processes considering formability and spring-back. The effects of the material property,
including strain-rate sensitivity on formability as well as spring-back were also evaluated numerically. As for
the constitutive law, the isotropic hardening law was used along with the non-quadratic anisotropic yield
function, Yld2000-2d. Forming limit diagrams were calculated based on Hill’s bifurcation theory and the MK
theory. In order to characterize the material properties, tensile tests were performed for both the DP590
sheet and tube.

참고문헌 (Reference)

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