Analytical investigation of impact of blunt projectile with different ended into sandwich panels

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Abstract

In this paper, an analytical model has been presented for energy absorption of sandwich panels under ballistic impact. Aluminum-foam and composite-foam sandwich panel are investigated in this paper. In analytical model three types of sticker including cylindrical projectile with flat, hemispherical and conical ended have been considered. It is supposed that top and bottom skins and foam core failure by mean resistive pressure. Energy absorption of sandwich panels is the sum of the energy absorbed by the skins and foam. Energy absorption of sandwich panel is calculated and energy balancing equation has been employed for determination the ballistic limit and residual velocity of projectiles. The results of ballistic limit and residual velocity computed by new model have good agreement with experimental results. Also the effect of projectile shape in energy absorption of sandwich panel has been investigated.

Keywords

References

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Journal of Modeling in Engineering
Volume 13, Issue 42
October 2015
Pages 65-77

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History

  • Receive Date: 28 January 2017
  • Revise Date: 16 September 2017
  • Accept Date: 28 January 2017

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