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

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 843-860
• Serial:
  • International Journal of Mechanical Sciences
  • Volume: 14
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Accelerated tests; Arches; Cantilevers; Crash tests; Deflection; Elastoplasticity; Frames; High speed photography; Loads; Mathematical models; Mechanical elasticity; Numerical analysis; Plasticity; Repeated loads; Structural analysis; Theory
• Uncontrolled Terms: Elastic plastic analysis; Experimental data
• ITRD Terms: 5586: Deflection; 5912: Elasticity; 5567: Load; 6473: Mathematical model; 5922: Plasticity; 5588: Repetitive loading
• Subject Areas: Bridges and other structures; Design; Highways; Research; I24: Design of Bridges and Retaining Walls;

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