Dynamic Stress Concentration Analysis in High Velocity Tension of Strips with Notches or Hole by Means of High Speed Photoelasticity

  • K. Kawata
  • S. Hashimoto
Conference paper


The relations of dynamic stress concentration factor fd varying with time vs static stress concentration factor fs of very long strips with notches under dynamic tension are analyzed by high speed photoelasticity by means of a multiple spark gap camera using hard epoxy resin specimens and by numerical analysis using FEM and Newmark’s β method. As the shapes of the notches, central circular hole and U-shaped notches at both sides are chosen. The phenomenon of maximum stress position deviation towards incident side at the passage of stress wave front and the behaviour that fd increases with time and then tends to fs for all notches, are found. The results of corresponding FEM analyses well support the above mentioned behaviours obtained photoelastically.


Stress Wave Stress Concentration Factor Stress Plateau Dynamic Tension Dynamic Stress Concentration 
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  1. Kawata K, Hashimoto S, Hondo A, Ide T (1981) On the dynamic stress concentration of very long strips with notches under high velocity tension. Bull. Institute of Space and Aeronautical Sciences, University of Tokyo 17: 427–447Google Scholar
  2. Kawata K, Hashimoto S (196 5) On an analysis of dynamic stress concentration caused by an elastic wave with long stress plateau. ibid. 1: 69–102Google Scholar
  3. Kawata K, Hashimoto S (1972) On the dynamic stress concentration in long elastic bars with notches under dynamic tension. ibid. 8: 377–384Google Scholar

Copyright information

© Springer-Verlag Tokyo 1986

Authors and Affiliations

  • K. Kawata
    • 1
  • S. Hashimoto
    • 2
  1. 1.Faculty of Science and TechnologyScience University of TokyoNoda, Chiba 278Japan
  2. 2.Institute of Interdisciplinary ResearchUniversity of TokyoKomaba, Meguro-ku, Tokyo 153Japan

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