Finite Element Simulation of Dent Resistance For Automotive Rear Bumper

Yıl 2021, Cilt: 5 Sayı: 4, 214 - 219, 20.12.2021

İlker Bahar

https://doi.org/10.26701/ems.875571

Öz

In automotive industry, there is an increasing demand for weight reduction. On the other hand extraordinary style for automotive exteriors are used in order to increase number of sales. As a result, the usage of different shapes for exterior bumpers is getting increased. Because of that, finite element simulation of dent resistance for automotive bumpers has become a very important step in early steps of automotive design. In this paper, static dent resistance for automotive exterior rear bumper is investigated by using nonlinear finite element method. The thickness change for different areas of bumper is considered from CAD data. In addition, nonlinear mechanical properties such as plastic behavior of rear bumper material are used in the finite element simulations. In addition, the results that are obtained from physical test are also presented here to compare with the results of finite element simulations to see percentage of correlation. This study is mainly focused on the correlation between finite element simulations and physical test results. The finite element simulation results show us that the percentage of correlation with the physical test results is reasonable. Consequently, due to high percentage of correlation between nonlinear finite element results and physical test results, the nonlinear finite element results should be taken into account in early steps of automotive design in order to reach minimum cost and get the most robust solution to eliminate quality problems which may occur in the future.

Anahtar Kelimeler

Buckling, correlation, denting resistance, exterior bumper, nonlinear finite element simulation

Kaynakça

• [1] Shi, M., Brindza, J., Michel, P., Bucklin, P. et al. (1997). “Static and Dynamic Dent Resistance Performance of Automotive Steel Body Panels”, SAE Technical Paper 970158, DOI: https://doi.org/10.4271/970158
• [2] Jung, D.W. (2004). “A Parametric Study of Sheet Metal Denting Using a Simplified Design Approach”, KSME International Journal, Vol. 16, No. 12, pp. 1479–1492.
• [3] Mahmood H. F. (1981). “Dent Resistance of Surface Panel and Slam Area”, SAE Technical Paper No. 810099.
• [4] Dylan T., Hodgins B., Worswick M. (2001). “Static and Dynamic Denting of Paint Laked aa6111 Panels: Comparison of Finite Element Prediction and Experiments”, SAE, 2001-01-3047, DOI: https://doi.org/10.4271/2001-01-3047.
• [5] Vreede P. T., Tamis P. J. and Roelofsen M. E. (1995). “The Influence of Material Properties and Geometry on Dynamic Dent Resistance: Experiments and Simulations”, Proceedings IBEC ’95, International Body Engineering Conference, pp. 79–86.
• [6] Sakai, H., Saito, K. and Tsukada, H. (1983). “Stiffness and Dent Characteristics of Body Outer Surface Panel-Finite Element Analysis and Experiment”, Int. J. of Vehicle Design, Vol. 4, No. 1, pp. 13–22, DOI: 10.1504/IJVD.1983.061295.
• [7] Holmberg S., Nejabat B. (2004) “Numerical Assessment of Stiffness and Dent Properties of Automotive Exterior Panals”, Materials and Design 25, 361-368, DOI: 10.1016/j.matdes.2003.12.005
• [8] Javad M. (2007). “Thickness and Material Yield Strength Effects of Thin Sheets on Dent Resistance”, Automotive Engineering Department, Iran University of Science and Technology.
• [9] Zeng D., Xia Z. C. (2005) “A Comparative Study of Dent Resistance Incorporating Forming Effects”, SAE Paper, 2005-0089.
• [10] Werner MF. (1993). “Finite Element Simulation of Steel Body Panel Performance for Quasi-Static Dent Resistance”, Automotive Materials – IBEC’93.
• [11] Sabbagh M.A., Chavli R. N., Montgomery Jay S. (1995). “Quasi-Static Dent Depth Simulation Using Nonlinear FEA”, IBEC’95 Automotive Body Materials, 87-90, IBEC.
• [12] “ABAQUS Analysis Theory Manual”, ABAQUS Inc., 2017. “ABAQUS Analysis Theory Manual”, ABAQUS Inc., 2017.
• [13] “ABAQUS Analysis User’s Manual”, ABAQUS Inc., 2017. “ABAQUS Analysis User’s Manual”, ABAQUS Inc., 2017.
• [14] “Altair Hyperworks 2017: Users Guide.”, Altair Engineering, Inc., Troy, Michigan.
• [15] FCA Norms FCA Norms FCA Norms FCA Norms