|About this Abstract
||NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||Numerical Prediction of Failure in Single Point Incremental Forming Using a New Yield Criterion for Sheet Metal
||Hung Quach, Xiao Xiao, Jin jae Kim, Young Suk Kim
|On-Site Speaker (Planned)
||Young Suk Kim
A new yield function depends on the second stress invariant J2 and the third stress invariant J3 is proposed to describes the elastoplastic behavior of sheet metals. Addition, a series of basic fracture testing covering a wide range of stress state and different material orientations for aluminum alloy is carried out. The ductile fracture of the aluminum alloy is investigated using a hybrid experimental–numerical approach. Besides, a new uncoupled ductile fracture that is concerned with the micro mechanisms of voids is introduced to predict the failure of material. The new yield criterion and fracture model are implemented into the ABAQUS/Explicit code to predict the fracture in different stress states. The incremental sheet forming tests are performed to verify the efficiency of the proposed yield criterion and fracture criterion. The proposed yield criterion and fracture model can be utilized for predicting plastic deformation and initial fracture in sheet metal forming.
||Definite: At-meeting proceedings