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Effect of Structural Stiffness and Kinetic Energy on Impact Force
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English
Abstract
This study relates the structural stiffness and kinetic energy of impact (between 34 J and 136 J) to the resulting contact force and duration of force rise for a square tube with wall thickness between 12.7 mm and 25.4 mm. LS-DYNA3D, finite element program was used for the analysis. Two materials, AISI 4340 and AISI 301 steel, are used as examples. Regression equations for predicting the relationship between the structural stiffness, maximum force and duration of force rise are given for each material. Results indicate an increase in the force of impact and a decrease in the duration of force rise with the increase in structural stiffness; an increase in force and an increase in duration of force rise with the increase in kinetic energy of impact; under some conditions, significant plastic deformation results in only a moderate change in force of impact and significant increase in duration of force rise; under some conditions, lack of significant plastic deformation results in significant increase in force and only marginal increase in duration of force rise.
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Citation
Ziejewski, M. and Goettler, H., "Effect of Structural Stiffness and Kinetic Energy on Impact Force," SAE Technical Paper 961852, 1996, https://doi.org/10.4271/961852.Also In
References
- Magee, C.L. Thornton, P.H. “Design Considerations in Energy Absorption by Structural Collapse,” SAE paper 780434 1978
- NcNay, G.H. II “Numerical Modeling of Tube Crush with Experimental Comparison,” SAE paper 880898 1988
- Schmueser, D.W. Wickliffe, L.E. Mase, G.T. “Front Impact Evaluation of Primary Structural components of a Composite Space Frame,” SAE paper 880890 1988
- Mahmood, H.F. Paluszny, A. “Design of Thin Walled Columns for Crash Energy Management - Their Strength and Mode of Collapse,” SAE paper 811302 1981
- Mahmood, H.F. Paluszny, A. “Stability of Plate-Type Box Columns Under Crush Loading,” Computational Method in Ground Transportation Vehicles, ASME Winter meeting Phoenix, AZ 1982
- Abramowicz, W. Jones, N. “Dynamic Progressive Buckling of Circular and Square Tubes,” Int. J. Impact Engng 4 4 243 270 1986
- Mahmood, H.F. Paluszny, A. “Crash Analysis of Thin Walled Beam-Type Structures,” SAE paper 880894 1988
- Wang, H.C. Meredith, D. “The Crush analysis of Vehicle Structures,” Int. J. Impact Engng. 1 3 199 225 1983
- Li, S. Reid, S. R. “The Plastic buckling of Axially Compressed Square Tubes,” Transactions of the ASME, Journal of Applied Mechanics 59 266 282 June 1992
- Wierzbicki, T. Abramowicz, W. “On the Crushing Mechanics of Thin-Walled Structures,” Transactions of the ASME, Journal of Applied Mechanics 50 727 734 December 1983
- Benson, D.J Hallquist, J.O. Stillman, D. W. “DYNA-3D, INGRID, and TAURUS - An Integrated, Interactive Software System for Crashworthiness Engineering,” Proceedings of the 1985 ASME International Computers in Engineering Conf. Boston, MA August 1985
- Scharnhorst, T. “FEM CRASH- A Supercomputer Application,” SAE paper 880897 1988
- Weirzbicki, T. Abromowicz, W. “Development and Implementation of Special Elements for Crash Analysis,” SAE paper 880895 1988
- Hallquist, J.O. Stillman, D.W Lin, T. “LS-DYNA3D User's Manual - Nonlinear Dynamic Analysis of Structures in Three Dimensions” Livermore Software Technology Corporation 1994
- Stillman, D.W. Hallquist, J.O. “LS-INGRID: A Pre-Processor And Three-Dimensional Mesh Generator For The Programs LS-DYNA3D, LS-NIKE3D And TOPAZ3D” Livermore Software Technology Corporation 1993
- “LS-TAURUS- An Interactive Post-Processor For The Programs LS-NIKE3D, LS-DYNA3D, And TOPAZ3D” Livermore Software Technology Corporation