LARGE DEFLECTION ELASTIC-PLASTIC RESPONSE OF CERTAIN STRUCTURES TO IMPULSIVE LOAD. NUMERICAL SOLUTIONS AND EXPERIMENTAL RESULTS

A theoretical and experimental study of the elastic-plastic response of certain structures to impact and impulsive load is described. Lead rings were allowed to fall freely on to A flat and pointed sharp anvil, aluminium rings were subjected to the impact of a free falling sharp indenter and thin aluminium cantilevers, rectangular and triangular frames and semicircular arches were subjected to magnetomotive and explosive impulse. A numerical solution based on a finite difference approximation was developed to describe the response of an equivalent lumped parameter model for each of the above structures. This method, although restricted to two-dimensional structures, can be applied to a variety of structural elements. High-speed photographs were taken for each of the loading events and the experimental data obtained were compared with the theoretical plastic response predicted by the numerical method. /Author/TRRL/

  • Corporate Authors:

    Pergamon Press, Incorporated

    Maxwell House, Fairview Park
    Elmsford, NY  United States  10523
  • Authors:
    • Hashmi, S J
    • AL-HASSANI, STS
    • Johnson, W
  • Publication Date: 1972

Media Info

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Filing Info

  • Accession Number: 00097956
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Oct 18 1975 12:00AM