STUDY ON DYNAMIC PLASTIC BUCKLING OF SLENDER THIN-WALLED PROJECTILES

【Author】

X.W.Chen~*,China Academy of Engineering Physics,China F.J.Zhang,China Academy of Engineering Physics,China M.Qu,China Academy of Engineering Physics,China

【Abstract】

<正>The present paper conducts experimental and numerical studies on the dynamic plastic buckling of slender thin-walled projectiles,such as KE warhead or Earth Penetrating Weapon(EPW).Two failure modes,i.e.,local axial crapy inflation and axial evaginable tearing,for different length-diameter-ratio projectiles,are observed in the tests.Different failure modes depend on the geometry of projectile,initial impact conditions and target material.Numerical simulations are conducted to display the failure and damage process of projectiles.It confirms that these failure modes in different scenarios agree well with the experimental phenomena.

【Keywords】

slender thin-walled projectile;;dynamic plastic buckling;;perforation;;experimental study;;numerical simulation

References

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Total: 7 articles

  • [1] Chen XW;Zhang F J;Xie RZ,et al, Mechanics of structural design of EPW:Part 3.Investigations on the reduced-scale tests, Explosion and Shock Waves, Explosion and Shock Waves (Explosion and Shock Waves)
  • [2] Chen XW;Zhang F J;Xu AM,et al, Buckling Analysis of Earth penetrating weapon and Equivalent Conditions of Targets, Explosion and Shock Waves, Explosion and Shock Waves (Explosion and Shock Waves)
  • [3] Qu M;Chen XW;Chen G, Numerical study on dynamic plastic buckling of EPW, Explosion and Shock Waves, Explosion and Shock Waves (Explosion and Shock Waves)
  • [4] Chen XW;Li QM, Structural Failure of a Penetration Projectile:Theoretical Analyses, Int J Impact Engng, International Journal of Impact Engineering (International Journal of Impact Engineering)

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