High Speed Impact and Penetration Analysis using Explicit Finite Element Method

Paik, Seung-Hoon; Kim, Seung-Jo

Journal of the Korea Institute of Military Science and Technology 2005;8(4):5-13.

Seung-Hoon Paik, Seung-Jo Kim

¹Seoul National University
²Flight Vehicle Research Center

외연 유한요소 기법을 사용한 고속충돌 및 관통해석

백승훈, 김승조

¹서울대학교 대학원
²서울대학교, 비행체특화센터

Abstract

The impact of a long-rod penetrator into oblique plates with combined obliquity and yaw is investigated. The study was done using a newly developed three dimensional dynamic and impact analysis code, which uses the explicit finite element method. Through the comparison of simulation result with experimental result and other code's result, the adaptability and accuracy of the developed code is evaluated under the complex situation in which yaw angle and oblique angle exist simultaneously. As a result of comparison, it has found that deformed shape, residual length and velocity, rotational velocity of long-rod show good agreement with experimental data. Through this study, the applicability and accuracy of the code as a metallic armour system design tool is verified.

Key Words: High Velocity Impact, Long Rod Penetrator, Oblique Impact, Explicit FEM