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Influence Factor Analysis of Projectile on the Fracture Behavior of Aluminum Alloys Under High Velocity Impact with Latin Square Method

라틴방격법을 이용한 고속 충격 알루미늄합금의 파괴거동에 미치는 충격자 영향 분석

  • Received : 2010.12.20
  • Accepted : 2011.07.13
  • Published : 2011.09.01

Abstract

Structural impact problems are becoming increasingly important for a modern defense industry, high-speed transportation, and other applications because of the weight reduction with high strength. In this study, a numerical investigation on the impact fracture behavior of aluminum plates was performed under various projectile conditions such as nose shapes, velocities, and incidence angles. In order to reduce the iterative numerical analysis, the Latin Square Method was employed. The influence factor was then determined by an FE analysis according to the conditions. The results were evaluated by means of a statistical significance interpretation using variance assessment. It was shown that the velocity and incidence angle can be the most important influence factors representing the impact absorption energy and plastic deformation, respectively.

Keywords

Latin Square Method;Finite element analysis;Fracture behavior;High velocity impact

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