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Structural Engineering and Mechanics
  Volume 3, Number 5, September 1995, pages 463-474
DOI: http://dx.doi.org/10.12989/sem.1995.3.5.463
 


ON THE LARGE PLASTIC-DEFORMATION OF TUBULAR BEAMS UNDER IMPACT LOADING
WANG B

 
Abstract
    When a tubular cantilever beam is loaded by a dynamic force applied transversely at its tip, the strain hardening of the material tends to increase the load carrying capacity and local buckling and cross-sectional overlization occurring in the tube section tends to reduce the moment carrying capacity and results in structural softening. A theoretical model is presented in this paper to analyze the deformation of a tubular beam in a dynamic response mode. Based on a large deflection analysis, the hardening/softening M-kappa relationship is introduced. The main interest is on the curvature development history and the deformed configuration of the beam.

 
Key Words
    ELASTOPLASTIC DEFORMATION, DYNAMIC PLASTICITY, LARGE DEFLECTION, HARDENING SOFTENING MOMENT CURVATURE RELATIONSHIP, IMPACT, PIPE WHIP
 
Address
WANG B, NANYANG TECHNOL UNIV,SCH MECH & PROD ENGN,SINGAPORE 2263,SINGAPORE
 

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