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Sensitivity of Material Constitutive Parameters in Sheet Metal Forming Simulations
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Abstract
Material constitutive modeling is an important aspect in the continuous improvement process for sheet metal forming simulation and analysis. In this study, a sensitivity study of material constitutive parameters on forming simulation results is carried out for two different sheet metal parts. Three different yield criteria are evaluated in the simulation including isotropic yield criterion, Hill's 1948 anisotropic yield criterion and Barlat's non-quadratic anisotropic yield criterion. It is found that the forming results depend upon the yield criterion used in the simulation. Both thinning and stress in the formed part are very sensitive to the change in anisotropy value (r-value). Effects of strain rate sensitivity of a material on forming results are demostrated through the use of two different stress and strain data from different tensile speeds. It is also found that forming results such as thinning are very sensitive to the strain hardening behavior of the material.
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Citation
Shi, M., Prince, D., and Song, W., "Sensitivity of Material Constitutive Parameters in Sheet Metal Forming Simulations," SAE Technical Paper 982300, 1998, https://doi.org/10.4271/982300.Also In
References
- Shi M.F. Meuleman D.J. “Strain Rate Sensitivity of Automotive Steels” SAE Technical Paper No. 920245 1992
- Hill R. “A Theory of the Yielding and Plastic Flow of Anisotropic Metals” Proc. Roy. Soc. London 287 1948
- Barlat F. Lian J. “Plastic Behavior and Stretchability of Sheet Metals, Part I: A Yield Function for Orthotropic Sheets Under Plane Stress Conditions” Int. J. of Plast. 5 51 66 1989
- Hill R. “Theoretical Plasticity of Textured Aggregates” Math. Proc. Comb. Phil. Soc. 85 179 1979
- Hosford W.F. “On Yield Loci of Anisotropic Cubic Metals” Proc. 7th North America Metalworking Conference SME Dearborn, Michigan 191 1979
- Barlat F. Maeda Y. Chung K. Yanagawa M. Brem J.C. Hayashida Y. Lege D.J. Matsui K. Murtha S.J. Hattori S. Becker R.C. Makosey S. “Yield Function Development for Aluminum Alloy Sheets” J. Mech. Phys. Solids 45 1727 1997
- Lian J. Baudelet B. “Forming Limit Diagram of Sheet Metal in the Negative Minor Strain Region” Mat. Sci. Engng. 86 137 1987
- Shi M.F. Gerdeen J.C. “Effect of Strain Gradient and Curvature on Forming Limit Diagrams for Anisotropic Sheets” J. Mater. Shaping Technol. 9 253 1991
- Graf A. Hosford W.F. “The Effect of R-value on Calculated Forming Limit Curves” Forming Limit Diagrams: Concepts, Methods and Applications Wagoner R.H. Chan K.S. Keeler S.P. TMS 153 1989
- Chu E. Shi M.F. Gerdeen J.C. “Certain Aspects of the Limiting Drawing Ratio in Sheet Metal Forming Processes” Proc. 15th IDDRG Biennial Congress Dearborn, Michigan, U.S.A. 171 1988
- Shi M.F. “Material Constitutive Laws vs. Springback Simulations” ASME Sheet Metal Symposium November 15-20 1998 Anaheim, California
- Shi M.F. “Strain Hardening and Forming Limits of Automotive Steels” SAE Technical Paper No. 950700 1995