Vehicle Body Panel Thermal Buckling Resistance Analysis
Published April 1, 2014 by SAE International in United States
Annotation of this paper is available
This paper discusses CAE simulation methods to predict the thermal induced buckling issues when vehicle body panels are subjected to the elevated temperature in e-coat oven. Both linear buckling analysis and implicit quasi-static analysis are discussed and studied using a quarter cylinder shell as an example. The linear buckling analysis could produce quick but non-conservative buckling temperature. With considering nonlinearity, implicit quasi-static analysis could predict a relative conservative critical temperature. In addition, the permanent deformations could be obtained to judge if the panel remains visible dent due to the buckling. Finally these two approaches have been compared to thermal bucking behavior of a panel on a vehicle going through thermal cycle of e-coat oven with the excellent agreement on its initial design and issue fix design. In conclusion, the linear buckling analysis could be used for quick thermal buckling evaluation and comparison on a series of proposals. The implicit quasi static analysis is must to conduct to determine if a body panel will buckle or not and how much permanent deformation may remain in any thermal circumstance.
CitationZhang, W., Guo, M., Stibich, P., and Bhandarkar, R., "Vehicle Body Panel Thermal Buckling Resistance Analysis," SAE Technical Paper 2014-01-0926, 2014, https://doi.org/10.4271/2014-01-0926.
- Sun B. H., Yeh K. Y., Rimott F. B. J. “On the Buckling of Structures”, Technische Mechanik, Band 15, Heft (2) (1995), 129-140, Manuskripteigang:28. Mἂrz, 1995.
- David, Bushnell “Buckling of Shells-Pitfall for Designers” AIAA 80-0665R, Vol. 19, No. 9 Sep. 1981.
- Teng Jing Guang “Buckling of Thin Shells; Recent advances and Trends”, Applied Mechanics, Rev 49, 263-274, April 1996.
- Jones Robert M., “Buckling of Bars, Plates, and shells”, Bull Ridge Corporation, Jan 1, 2006.
- Ventsel Eduard, Krauthammer Theodor, “Thin Plates and Shells: Theory: Analysis, and Applications”, Marcel Dekker, Inc, 2001.
- Degenhardt R., Klein H., Kling A., Temmen H., Zimmermann R., “Buckling and postbuckling analysis of shells under quasi-static and dynamic loads”, Proceedings Workshop “Schwarzer Rumpf (CFRP for Future Aircraft Structures)” Braunschweig, Germany, 20 October, 2001.
- Abaqus Theory Manual, Volume II: Procedures, Version 6.11, Dassault System, SIMULIA 2011.
- Abaqus Analysis Manual, Volume II: Analysis Procedures, Version 6.11, Dassault System, SIMULIA 2011.