|About this Abstract
||NUMISHEET 2022: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||Lightweighting through Stiffening Dart Formation and Its Rigidity Evaluation
||Dohyun Leem, Lu Huang, Joshua Solomon, Hui-ping Wang, Jian Cao
|On-Site Speaker (Planned)
Stiffening darts are commonly added in angle brackets to enhance bending stiffness of the components such that a thinner gauge can be used for lightweighting. It also helps to reduce springback in a press brake operation. This study investigates the plastic material flow and dimensional deviation/distortion induced during dart formation in a press brake bending process by means of a combined numerical and experimental approach. The forming processes are simulated and the final formed geometries are compared with nominal designs after evaluating the springback angles. In addition, methods of systematically evaluating dart stiffening effect in an angle bracket are proposed, where folding, flattening, and axial compression test are described. Example rigidity test results for dart designs are provided to discuss relationship between dart geometry and its stiffening effect.
||Definite: At-meeting proceedings