Springback is a major concern in stamping of advanced high strength steels (AHSS). The existing computer simulation technology has difficulty predicting this phenomenon accurately even though it is well developed for formability simulations. Great efforts made in recent years to improve springback predictions have achieved noticeable progress in the computational capability and accuracy. In this work, springback simulation studies are conducted using FEA software LS-DYNA®. Various parametric sensitivity studies are carried out and key variables affecting the springback prediction accuracy are identified. Recently developed simulation technologies in LS-DYNA® are implemented including dynamic effect minimization, smooth tool contact and newly developed nonlinear isotropic/kinematic hardening material models. Case studies on lab-scale and full-scale industrial parts are provided and the predicted springback results are compared to the experimental data. The results show significant improvement in springback prediction accuracy and robustness.
Springback Prediction Improvement Using New Simulation Technologies
Sae Technical Papers
SAE World Congress & Exhibition ; 2009
2009-04-20
Aufsatz (Konferenz)
Englisch
Springback simulation for style prediction
Kraftfahrwesen | 2005
|Springback Prediction in Sheet Forming Simulation
SAE Technical Papers | 1994
|Springback prediction in sheet forming simulation
Kraftfahrwesen | 1994
|Springback prediction using combined hardening model
Kraftfahrwesen | 2000
|Springback Prediction Using Combined Hardening Model
SAE Technical Papers | 2000
|