Ding-Shing Cheng1, Cheng-Wei Hung2 and Sheng-Jung Pi This email address is being protected from spambots. You need JavaScript enabled to view it.2

1Department of Environmental Information and Engineering, Chung Cheng Institute of Technology, National Defense University, Tauyuan County, Taiwan, R.O.C.
2School of Defense Science, Chung Cheng Institute of Technology, National Defense University, Tauyuan County, Taiwan, R.O.C.


 

Received: November 20, 2012
Accepted: February 20, 2013
Publication Date: March 1, 2013

Download Citation: ||https://doi.org/10.6180/jase.2013.16.1.09  


ABSTRACT


The objective of this study is to simulate shock wave due to near-field explosion by using Arbitrary-Lagargian-Eulerian (ALE) fluid-structure interaction algorithm in the LS-DYNA finite element analysis software. Overpressure from near-field burst simulation was compared to the U. S. Army Technical Manual TM5-1300, with relative difference of 5%, for a scaled distance from 0.09 to 0.29 m/kg1/3. The results showed that LS-DYNA can predict near-field explosion. Furthermore, using LS-DYNA Mapping 2D to 2D technology can effectively increase the numerical model size of which scaled distance can be extended from 0.09 to 0.61 m/kg1/3.


Keywords: ALE, LS-DYNA, Overpressure, Mapping


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