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Prestrain Effects on Static Dent Resistance of Automotive Steels
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Abstract
In previous investigations, it has been shown that the dent resistance of an auto body panel depends upon the yield strength of the material. However, it is known that the yield strength of steel increases with prestrain due to strain hardening. Panel design and material selection based on the material properties obtained from unstrained sheet steels may lead to inaccurate prediction of the dent resistance of the formed panel. In this study, the effect of prestrain on the static dent resistance of auto body panels was investigated. Using existing empirical relationships between dent resistance and panel properties, it was found that the static dent resistance of an auto panel depends not only on the part geometry and material properties but also on the strain level in the panel. The improvement in dent resistance resulting from a material change from an AKDQ steel to a bake hardenable steel or a high strength steel was determined at different strain levels. It is shown that the dent resistance of a panel can be significantly improved by a small increase in the strain level of the panel. It is believed that the information provided in this investigation can be used to help optimize the design and to assist in material selection relative to the dent resistance of auto body panels.
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Shi, M., Meuleman, D., Alaniz, C., and Zurdosky, S., "Prestrain Effects on Static Dent Resistance of Automotive Steels," SAE Technical Paper 910288, 1991, https://doi.org/10.4271/910288.Also In
References
- Dicello J.A. George R.A. “Design Criteria for the Dent Resistance of Auto Body Panels” SAE Paper No. 740081 1974
- Yutori Y. Nomura S. Kokubo I. Ishigaki H. “Studies on the Static Dent Resistance” Proceedings of 11th IDDRG 561 569 1980
- Sakai H. Saita K. Tsukada H. “Stiffness and Dent Characteristics of Body Outer Surface Panel-Finite Element Analysis and Experiment” Int. J. Vehicle Design 4 13 22 1983
- Ni C.M. “Analysis of Panel Dent Resistance” Soc. of Eng. Sci., 13th Annual Meeting Hampton, VA 653 663 1976
- Iseki H. Sowerby R. Bhattacharyya D. Gatt P. “A Theoretical and Experimental Study of a Curved Strip Compressed by a Flat Plate” J. Appl. Mech., Trans. ASME 56 96 104 1989
- Vadhavkar A.V. Fecek M.G. Shah V.C. Swenson W.E. “Panel Optimization Program (POP)” SAE Paper No. 810230
- Mahmood H.F. “Dent Resistance of Surface Panel and Slam Area” SAE Paper No. 810099 1981
- Burley C.E. Niemeier B.A. “Denting Properties of Aluminum Autobody Components” SAE Paper No. 770199
- Campbell M.P. “Evaluation of a Continuous Annealed Bake Hardenable Steel for Improved Dent Resistance” SAE Paper No. 890711 1989
- Swenson W.E., Jr. Traficante R.J. “The Influence of Aluminum Properties on the Design, Manufacturability and Economics of an Automotive Body Panel” SAE Paper No. 820385 1982
- Müschenborn W. Maid O. Blümel K. Hartmann G. Bleck W. “Shape Accuracy and Denting Behaviour-Criteria for the Selection of High Strength Steel Sheet” Proceedings of 13th IDDRG Melbourne, Australia 225 235 1984
- Painter M.J. Pearce R. “The Denting Behavior of Some Sheet Materials” Proceedings of 12th IDDRG S. Margherita Ligure, Italy 399 410 1982
- Arrigoni G. Carli E. “The Practice of Weight Reduction in Autobodies Using HS Steels” Proceedings of 12th IDDRG S. Margherita Ligure, Italy 7 19 1982
- Wollrab P.M. Drecher H. “Application of High Strength Steel Sheets for Outer Panels of Autobodies” Proceedings of 12th IDDRG S. Margherita Ligure, Italy 287 297 1982
- Kojima M. Hayashi Y. “A Study on the Strength of Dent-Resistance Steel Sheets for Auto-Body Panels” Sumitomo Metals 33 97 107 1981
- Korch I. Owens T. Bala M. Thompson R. “Use of Continuously Annealed Bake Hardenable Steels for Automotive Outer Panels” SAE Paper No. 900715 1990
- Shi M.F. Meuleman D.J. Alaniz C.L. Zurdosky S.J. “An Evaluation of the Dynamic Dent Resistance of Automotive Steels” SAE Paper No. 910287 1991
- Hill R. “Theoretical Plasticity of Textured Aggregates” Math. Proc. Comb. Phil. Soc. 85 179 191 1979
- Hosford W.F. “On Yield Loci of Anisotropic Cubic Metals” Proc. 7th North Amer. Metalworking Conf. SME Dearborn, Ml, USA 191 1979
- Barlat F. Lian J. “Plastic Behavior and Stretchability of Sheet Metals, Part I: A Yield Function for Orthotropic Sheets Under Planes Stress Conditions” Int. J. Plast. 5 51 66 1989
- Chu E. “Simple Mathematical Models for Predicting Can Wall Thickening and Can Wall Elongation in Die Necking Processes” Proceedings of 16th IDDRG Borlänge, Sweden 285 293 1990
- ASTM Standards: Standard Test Methods and Definitions for Mechanical Testing of Steel Products
- Automotive Steel Design Manual American Iron and Steel Institute 1988
- Dent Resistance Requirements for Automotive Body Panels National Steel Automotive Technical Bulletin
- White J.L. Atkins G.E. “Improvements in the Dent Resistance of Large Automotive Panels” Proceedings of 12th IDDRG S. Margherita Ligure, Italy 255 264 1982
- Asai T. Sakai K. Kato K. Oohashi A. Hirano M. “Study for the Use of High Strength Steel Sheet for Autobody Panels” Proceedings of 11th IDDRG 257 266 1980