Abstract
Incremental sheet forming is a flexible process that benefits from the evolution of CNC machine tools; it usually uses a three-axis NC milling machine even for asymmetric parts. This paper presents a numerical simulation of single point incremental forming (SPIF) process of asymmetric part, manufactured using two types of NC machines: NC milling machine and NC turning machine. A finite element model (FEM) is developed by using the commercial FE code ABAQUS/Explicit. An elastoplastic constitutive model with quadratic yield criterion of Hill’48 and isotropic hardening behavior has been considered for the sheet metal. A user material subroutine (VUMAT) is used to implement this material behavior. Results including thickness variation, deformed shape, and forming force along Z-axis are presented. A remarkable difference has been observed in the results obtained from the use of these two machines. In fact, NC lathe machine is a good alternative to manufacture asymmetric parts and many advantages can be mentioned, such as the remarkable decrease of thinning and vertical force which improves formability during the ISF operation.
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Ben Said, L., Belhassen, L., Mars, J., Wali, M. (2018). On the Use of NC Milling and Turning Machines in SPIF Process of Asymmetric Parts: Numerical Investigation. In: Haddar, M., Chaari, F., Benamara, A., Chouchane, M., Karra, C., Aifaoui, N. (eds) Design and Modeling of Mechanical Systems—III. CMSM 2017. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-66697-6_27
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DOI: https://doi.org/10.1007/978-3-319-66697-6_27
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