RESEARCH ON THE NUMERICAL MODELING OF THE INCREMENTAL PLASTIC DEFORMATION PROCESS USING A HEMISPHERICAL TOOL

Emanuel BĂDULESCU, Daniela Monica IORDACHE, Eduard Laurențiu NIȚU, Claudiu BĂDULESCU

Abstract


This study presents the numerical modeling of incremental plastic deformation using a hemispherical tool on AA6061 aluminum alloy. A finite element model was developed in ABAQUS, using the explicit method. The thermo-mechanical behavior of the material was defined by the Johnson-Cook law, the modeling of thermal phenomena was based on an adiabatic approach, and the simulation time was reduced by using mass scaling. Validation, based on comparing the simulation results with experimental deformation forces and temperatures, revealed similar trends, although some differences in the maximum values appeared due to modeling assumptions. The analysis of deformation forces, temperatures, 3D shape evolution and plastic equivalent strain provided key information on the SPIF process. Key points identified include the onset of plastic deformation, stabilization of forces, and temperature during the process.

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