Advertisement

Crash Analysis of Structures Consisting of Thin-Walled Metal Components

  • H. F. Mahmood
  • X. Tang
  • A. Paluszny
Conference paper

Abstract

This paper presents a crash modeling of thin-walled metal components whose crash characteristics are controlled by local buckling. The force-deformation relationship of such components can be, generally, divided into three parts: linear, post buckling and deep-collapse. The buckling stress determines the linear limit and the crippling stress determines the maximum load capacity from where the components undergo deep-collapse. During the post buckling the effective area concept is used to calcluate element stiffness. During the deep-collapse “crash-type” hinges are formed and the elements undergo inelastic folding. The element stiffness depends on the fold shape and mode. This concept is incorporated into the computer program “VCRASH” for the crash analysis of general three-dimensional thin-walled structures. The analytical results show a good agreement with test data.

Keywords

Beam Element Plastic Hinge Local Buckling Lawrence Livermore National Laboratory Maximum Load Capacity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Reference

  1. 1.
    Hughes, T. J. R. and Liu, W. K., “Nonlinear Finite Element Analysis of Shells”, Computer Method in Applied Mechanics and Engineering, North-Holland Publishing Company, P331–362, 1981.zbMATHGoogle Scholar
  2. 2.
    Hallquist, J. O., “Theoretical Manual for Dyna3D”, Mechanical Engineering Department, Lawrence Livermore National Laboratory, March, 1983.Google Scholar
  3. 3.
    Benson, D. J. and Hallquist, J. O., “Dyna3d: A Finite Element Program for Supercomputers”, Lawrence Livermore National Laboratory, University of California, 1986.Google Scholar
  4. 4.
    Mahmood, H. F., Paluszny, A. and Tang X., “A 3-D Computer Program for Crashworthiness Analysis of Vehicle Structures Compose of Thin-Walled Beam Components”, Symposium on Vehicle Crashworthiness Including Impact Biomechanics, ASME Winter Annual Meeting, Anaheim, CA, 1986.Google Scholar
  5. 5.
    Mahmood, H. F. and Paluszny, A., “Design of Thin Walled Columns for Crash Energy Management — Their Strength and Mode of Collapse”, 4th International Conference on Vehicle Structural Mechanics, P99, Detroit Plaza Hotel, November, 1981.CrossRefGoogle Scholar
  6. 6.
    Mahmood, H. F, Saha, N. K. and Paluszny, A., “Stiffness and Crash Strength Characteristics of Thin-Walled Plate Components”, Computers in Engineering-Volume 1, ASME, P501, 1985.Google Scholar
  7. 7.
    Bathe, K. J. and Wilson, E. L., “Numerical Methods in Finite Element Analysis”, Prentice-Hall, Inc., 1976.zbMATHGoogle Scholar
  8. 8.
    Kecman, D., “Bending Collapse of Rectangular and Square Tubes in Relation to The Bus Roll Over Problem”, Ph.D. Thesis, Cranfield Institute of Technology, England 1979.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • H. F. Mahmood
    • 1
  • X. Tang
    • 1
  • A. Paluszny
    • 1
  1. 1.Scientific Research LabFord Motor Co.DearbornUSA

Personalised recommendations