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Assessment of Impact Resistance Performance of Post-tensioned Curved Wall using Numerical Impact Analysis

긴장력이 도입된 곡면벽체의 충돌저항성능 수치해석평가

  • Received : 2015.11.02
  • Accepted : 2015.11.10
  • Published : 2016.04.29

Abstract

In this study, the effect of wall curvature and post-tension force on impact resistance is evaluated by numerical analysis method. A total of twelve cases with two parameters such as wall shape of flat and curved, and consideration of post-tensioning force were included in this study. A 3D detailed finite element model of commercial passenger plane engine is utilized as projectile. The depths of penetration and central displacement calculated from the numerical simulations were compared and analysed. As the results of the numerical simulations of this study, penetration depth was reduced approximately 60~80% due to the application of post-tension force, but the decrease of maximum central displacement was not remarkable. Also, the effect of curvature was relatively insignificant.

Keywords

impact resistance;impact analysis;curvature;post-tension;penetration depth;maximum displacement

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Acknowledgement

Supported by : 한국방사선안전재단