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

Abstract

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 † Corresponding author: Tel: +82-31-8005-3511; E-mail: jwhee2@dankook.ac.krReceived November 2 2015; Revised November 9 2015;Accepted November 10 2015Ⓒ2016 by Computational Structural Engineering Institute of KoreaThis is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License(http://creativecommons. org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.