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Use of Response Surface Methodology for Prediction of Dent Resistance of Automotive Closure Panels
Technical Paper
2004-01-0163
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Prediction of dent resistance of automotive closure panels using Finite Element Analysis (FEA) has increased in popularity as an effective screening tool to determine the optimum combination of material properties and thickness for a given exposed panel application. The analysis process typically includes formability analysis, the results of which are mapped onto a structural model for analysis of dent resistance. Although this method is general, allowing for consideration of the entire panel assembly and boundary conditions, the approach can be very time consuming especially when evaluating several combinations of material grade and thicknesses. This paper presents an alternative approach for the prediction of dent resistance. Using a number of screening simulations the most influential variables affecting dent resistance were determined. A rectangular bi-curved plate was used to approximate the panel assembly. A Design of Experiments (DOE) approach was then used to vary the geometry, thickness, mechanical properties and stretch imparted during stamping. Denting FEA was conducted on these rectangular plates, followed by statistical analysis of the results of the denting FEA. Predictive models for dent resistance based on the statistical analysis were developed for several steel grades. Comparison of the model prediction to actual test results yielded excellent agreement.
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Citation
Sriram, S. and Lanzi, O., "Use of Response Surface Methodology for Prediction of Dent Resistance of Automotive Closure Panels," SAE Technical Paper 2004-01-0163, 2004, https://doi.org/10.4271/2004-01-0163.Also In
Innovations in Steel Sheet and Bar Products and Processing, and Modelling and Testing of Steel Structures
Number: SP-1837; Published: 2004-03-08
Number: SP-1837; Published: 2004-03-08
References
- Procedures for evaluating dent resistance of automotive body panels Auto/Steel Partnership Southfield, MI January 2001
- Sabbagh M. A. Chavali R. N. Montgomery J. S. Quasi-Static Dent Depth Simulation Using Non-linear FEA Proc. of IBEC-Materials and Body Testing 1995
- Raghavan K. S. Arwashan N. Analysis of Quasi-Static Denting Behavior of Automotive Sheet Steels SAE Paper # 970984 Society of Automotive Engineers Warrendale, PA
- Arwashan N. Lou M. M. Computer Prediction of Quasi-Static Dent Resistance of Automotive Panels Innovations in Processing and Manufacturing of Sheet Materials Demeri M. Y. TMS 2001 415 424
- Thomas D. Hodgins B. Worswick W. Finn M. J. Gong K. Static and Dynamic Denting of Paint Baked AA6111 Panels: Comparison of Finite Element Predictions with Experiments SAE Paper # 2001-01-3047 Society of Automotive Engineers Warrendale, PA
- Sato K. Tokita Y. Ono M. Yoshitake A. Dent Simulation of Automotive Outer Panel Using High Strength Steel Sheets SAE Paper # 2003-01-0606 Society of Automotive Engineers Warrendale, PA
- Sakai H. Saito K. Tsukuda H. Stiffness and Panel Characteristics of Body Outer Surface Panel-Finite Element Analysis and Experiment International Journal of Vehicle Design 4 1 13 22
- Sriram S. Speer J. G. Matlock D. K. Material and Design Factors Influencing the Quasi-Static Dent Resistance of Steel Body Panels SAE Paper # 1999-01-0025 Society of Automotive Engineers Warrendale, PA
- ABAQUS, v6.0 Hibbitt, Karlsson and Sorensen, Inc. 1080 Main Street, Pawtucket, RI 02860-4847
- Hill R. A Theory of the Yielding Flow of Anisotropic Materials Proceedings of the Royal Society A193 1948 281 297
- Pearson E. S. Hartley H. O. Biometrika Tables for Statisticians 1 Third Cambridge The University Press 1966 236ff
- Ispat Inland Dent Testing Reports Ispat Inland Research Laboratories East Chicago, IN
- DiCostanzo G. P. Matlock D. K. Foley R. P. Effect of Tensile Properties on Dent Resistance of Sheet Steels SAE Paper # 960024 Society of Automotive Engineers Warrendale, PA
- Allen B. J. Matlock D. K. Sriram S. Speer J. G. The Effects of Flow Stress on the Dent Performance of Sheet Steels Proc. 40th MWSP Conference 1998 83 92
- Sriram S. Effect of Stamping and Styling on Dent Resistance Proc. 43rd MWSP Conference 2001 235 250