Simulation Study on Expansive Jet Formation Characteristics of Polymer Liner

An ideally shaped charge warhead is an effective weapon against armored targets. The use of the gathering energy effect generated by the explosion drives the liner to form a shaped charge jet, which can penetrate the armored target. Existing shaped charge warheads often use a metal liner. Herein, we...

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Autores principales: Yi, Jianya, Wang, Zhijun, Yin, Jianping, Zhang, Zhimin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6427461/
https://www.ncbi.nlm.nih.gov/pubmed/30836709
http://dx.doi.org/10.3390/ma12050744
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author Yi, Jianya
Wang, Zhijun
Yin, Jianping
Zhang, Zhimin
author_facet Yi, Jianya
Wang, Zhijun
Yin, Jianping
Zhang, Zhimin
author_sort Yi, Jianya
collection PubMed
description An ideally shaped charge warhead is an effective weapon against armored targets. The use of the gathering energy effect generated by the explosion drives the liner to form a shaped charge jet, which can penetrate the armored target. Existing shaped charge warheads often use a metal liner. Herein, we discuss the characteristics of polymer liners. To study the characteristics of the expansive jet formed by the polymer liner, three polymer materials with different properties—polytetrafluoroethylene (PTFE), nylon (PA), and polycarbonate (PC)—were selected. Using the smooth particle hydrodynamics (SPH) method and the AUTODYN finite element software, the expansive jet formation by the polymer liners was simulated and verified by experimental data. The polymer jets of the different materials exhibit a certain degree of expansivity; however, due to differences in the material properties, the expansive diameter of the jet and the degree of head compaction differed. The expansive diameter of the PA jet was the smallest, and that of the PTFE jet was larger than that of the PA jet, but with a smaller compactness. The PC jet exhibited the largest expansive diameter and the highest degree of compactness.
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spelling pubmed-64274612019-04-15 Simulation Study on Expansive Jet Formation Characteristics of Polymer Liner Yi, Jianya Wang, Zhijun Yin, Jianping Zhang, Zhimin Materials (Basel) Article An ideally shaped charge warhead is an effective weapon against armored targets. The use of the gathering energy effect generated by the explosion drives the liner to form a shaped charge jet, which can penetrate the armored target. Existing shaped charge warheads often use a metal liner. Herein, we discuss the characteristics of polymer liners. To study the characteristics of the expansive jet formed by the polymer liner, three polymer materials with different properties—polytetrafluoroethylene (PTFE), nylon (PA), and polycarbonate (PC)—were selected. Using the smooth particle hydrodynamics (SPH) method and the AUTODYN finite element software, the expansive jet formation by the polymer liners was simulated and verified by experimental data. The polymer jets of the different materials exhibit a certain degree of expansivity; however, due to differences in the material properties, the expansive diameter of the jet and the degree of head compaction differed. The expansive diameter of the PA jet was the smallest, and that of the PTFE jet was larger than that of the PA jet, but with a smaller compactness. The PC jet exhibited the largest expansive diameter and the highest degree of compactness. MDPI 2019-03-04 /pmc/articles/PMC6427461/ /pubmed/30836709 http://dx.doi.org/10.3390/ma12050744 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yi, Jianya
Wang, Zhijun
Yin, Jianping
Zhang, Zhimin
Simulation Study on Expansive Jet Formation Characteristics of Polymer Liner
title Simulation Study on Expansive Jet Formation Characteristics of Polymer Liner
title_full Simulation Study on Expansive Jet Formation Characteristics of Polymer Liner
title_fullStr Simulation Study on Expansive Jet Formation Characteristics of Polymer Liner
title_full_unstemmed Simulation Study on Expansive Jet Formation Characteristics of Polymer Liner
title_short Simulation Study on Expansive Jet Formation Characteristics of Polymer Liner
title_sort simulation study on expansive jet formation characteristics of polymer liner
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6427461/
https://www.ncbi.nlm.nih.gov/pubmed/30836709
http://dx.doi.org/10.3390/ma12050744
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