Scale Effects of Warhead on Concrete Penetration

Kim, Seokbong; Lee, Changsoo; Yoo, Yohan

doi:2017.20.2.238

J. KIMS Technol > Volume 20(2); 2017 > Article

Journal of the Korea Institute of Military Science and Technology 2017;20(2):238-245.
DOI: https://doi.org/10.9766/KIMST.2017.20.2.238

Scale Effects of Warhead on Concrete Penetration

Seokbong Kim, Changsoo Lee, Yohan Yoo

The 4th Research and Development Institute, Agency for Defense Development

탄두의 콘크리트 관통 시 스케일 영향

김석봉, 이창수, 유요한

국방과학연구소 제4기술연구본부

Abstract

This paper deals with the scale effects of warhead on concrete penetration. We investigated the scale effects using finite element analysis and Young's penetration equation. As the scale of penetration test decreases, the strain rate effects of target increases, and then strength of concrete target increases. This means the residual velocity and penetration depth of warhead decreases as the test model size decreases. Young's penetration equations are transformed with various penetrator mass and scale cases as a function of scale ratio. Penetration distance and residual velocity are not simply changed by the geometric scaling law.

Key Words: Scale Effects, Penetration Equation, Concrete, Residual Velocity, warhead