In this paper, a predictive method is developed to determine the forming limit strain and fracture limit strain in a stamped automotive component subjected to a complex strain history that would be experienced during an actual forming operation. The method of analysis is based on a damage mechanics model developed recently by the authors and extended to take into account the hysteretic effects of the principal strain and damage planes. The forming limit and fracture limit strains are then predicted using the modified damage model. Satisfactory predictions have been achieved for a practical case where the complex strain history is prescribed based an actual stamping operation.
Prediction of Limit Strains in Sheet Metal Forming Under Complex Strain History
Sae Technical Papers
SAE 2000 World Congress ; 2000
2000-03-06
Aufsatz (Konferenz)
Englisch
Prediction of limit strains in sheet metal forming under complex strain history
Kraftfahrwesen | 2000
|Forming limit at sheet metal forming
Tema Archiv | 1989
|A Path Independent Forming Limit Criterion for Sheet Metal Forming Simulations
SAE Technical Papers | 2008
|Forming limit diagrams for CNC RPIF of sheet metal
Tema Archiv | 2003
|A Prediction Approach for Oil Canning of Sheet Metal Forming Based on Strain Gradient
Springer Verlag | 2012
|