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A Few Issues On Accuracy of Springback Simulation of Automobile Parts
Technical Paper
1999-01-1000
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A study on the FEA simulation of the springback prediction is summarized. The discussion is focused on the accuracy of the simulation and the factors that might contribute to the inaccurate results of the simulation. First, springback simulation results based on both 3 parameter Barlat plasticity model and transversely anisotropic plasticity model are studied. The numisheet'93 2D draw bending problem and a rail type automobile panel are selected for the material model study using LS-DYNA and LS-NIKE. The simulations based on different friction coefficients along the rolling direction and the transverse direction are studied using the DaimlerChrysler in-house FEA code Cform. A study is also performed to investigate the different springback behavior due to friction coefficient changes between the flat tooling area and the curved tooling area. Some other issues such as the dynamic effect and the penalty factor effect are also briefly discussed. Suggestions for more accurate springback simulation are proposed.
Authors
Citation
Hu, Y., "A Few Issues On Accuracy of Springback Simulation of Automobile Parts," SAE Technical Paper 1999-01-1000, 1999, https://doi.org/10.4271/1999-01-1000.Also In
References
- Makinouchi, A. Nakamachi, E. Onate, E. Wagoner, R.H. “Proceedings of the 2nd International Conference, NUMISHEET'93, Numerical Simulation of 3-D Sheet Metal Forming Processes” Isehara, Japan 31 August 2 September 1993
- Lee J. K. Kinzel G. L. Wagoner R. H. “Proceeding of the 3rd International Conference, NUMISHEET'96, Numerical Simulation of 3-D Sheet Metal Forming Processes, Verification of Simulations with Experiments” Dearborn, MI, USA September 29 October 3 1996
- NIST-ATP SPP Second Coordination Offsite Meeting Southfield MI 15 May 1998
- Du Changqing Zhang Li Wang Neng-Ming Springback Prediction in Sheet Forming Simulation 1994 SAE International Congress and Exposition February 28 March 3 Cobo Center Detroit, Michigan
- Shih H. C. Wilson W. R. D. Saha P. K. Modeling the Influence of Plastic Strain on Boundary Friction in Sheet Metal Forming Proc. NAMRC XXIV 173 178 1996
- Hu Yang Du Changqing Zhang Li Numisheet'93 2D Draw Bending Springback Simulation Revisit Using LSTC-Dyna3D/Nike3D Submitted to Symposium Sheet Metal Forming Technology Feb 28 Mar 4 1999 San Diego, CA