Simulation of Fragmentation Characteristics of Projectile Jacket Made of Tungsten Alloy after Penetrating Metal Target Plate using SPH Method

  • Chun Cheng School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing - 210 094
  • Zhonghua Du School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing - 210 094
  • Xi Chen School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing - 210 094
  • Lizhi Xu School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing - 210 094
  • Chengxin Du School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing - 210 094
  • Jilong Han School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing - 210 094
DOI: https://doi.org/10.14429/dsj.69.13782
Keywords: PELE, Fragmentation, Smooth particle hydrodynamics model, Impact velocity, Thickness of target plate, Jacket fragmentation process

Abstract

A smooth particle hydrodynamics (SPH) model was used to simulate the fragmentation process of the jacket during penetrator with lateral efficiency (PELE) penetrating the metal target plate to study the fragmentation characteristics of PELE jacket made of tungsten alloy. The validity of the SPH model was verified by experimental results. Then the SPH model was used to simulate the jacket fragmentation under different impact velocity and thickness of target plate. The influence of impact velocity and thickness of target plate on the jacket fragmentation was obtained by analysing the mass distribution and quantity distribution of the fragments formed by the jacket. The results show that the dynamic fragmentation of tungsten alloy can be simulated effectively using the SPH model, Johnson-Cook strength model, maximum tensile stress failure criterion and stochastic failure model. When the thickness of target plate is fixed, the greater the impact velocity, the greater the pressure produced by the projectile impacting the target plate; with the increase of impact velocity, the mass of residual projectile decreases, the number of fragments formed by fragmentation of jacket increases linearly, and the average mass of fragments decreases exponentially. When the impact velocity is constant, the greater the thickness of the target plate, the longer the pressure duration by the projectile impacting the target plate; with the increase of the thickness of target plate, the mass of residual projectile decreases, the number of fragments formed by fragmentation of jacket increases linearly, and the average mass of fragments decreases exponentially. The numerical calculation model and research method adopted in this paper can be used to study the impact fragmentation of solid materials effectively.

Author Biographies

Chun Cheng, School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing - 210 094

Mr Chun Cheng is presently pursuing his PhD in armament science and technology from Nanjing university of Science and Technology. His current area of research includes light protective armor, experiment and simulation of terminal trajectory, fragmentation of solid material.

Zhonghua Du, School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing - 210 094

Dr Zhonghua Du obtained his PhD (Ammunition Engineering) from the Nanjing University of Science and Technology, in 2002. Currently, working as a Professor at the Nanjing university of Science and Technology. His main areas of research include terminal damage of projectile impacting on different target plates, such as metal plate, carbon fiber laminate panels, ceramic plate and concrete slab, development of high explosive anti-tank cartridge with high efficiency of damage, active protection system applied to infantry fighting vehicle and self-propelled artillery.

Xi Chen, School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing - 210 094

Dr (Mrs) Xi Chen obtained her PhD from the Nanjing university of Science and Technology in 2014. Currently working as an Assistant Professor of Nanjing University of Science and Technology. Her current area of research interests include damage and protection technology, impact dynamics and material mechanics properties.

Lizhi Xu, School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing - 210 094

Mr Lizhi Xu is presently pursuing his PhD in armament science and technology from Nanjing University of Science and Technology. He mainly studies the dynamic mechanical properties of polymer materials, the compression expansion properties of polymer materials and the impact compression properties of materials.

Chengxin Du, School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing - 210 094

Mr Chengxin Du is presently pursuing his PhD in armament science and technology from Nanjing University of Science and Technology. He has designed and developed some new types armor piercing projectile based using tungsten alloy or Zirconium based amorphous composites.

Jilong Han, School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing - 210 094

Mr Jilong Han is presently pursuing his PhD in armament science and technology from Nanjing University of Science and Technology. His current research interests are mechanical properties of amorphous material, experiment and simulation of high explosive anti-tank cartridge.

Published
2019-12-16
How to Cite
Cheng, C., Du, Z., Chen, X., Xu, L., Du, C., & Han, J. (2019). Simulation of Fragmentation Characteristics of Projectile Jacket Made of Tungsten Alloy after Penetrating Metal Target Plate using SPH Method. Defence Science Journal, 69(6), 591-598. https://doi.org/10.14429/dsj.69.13782
Issue
Vol 69 No 6
Section
Materials Science & Metallurgy
Copyright (c) 2019 Defence Science Journal

 Where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

 

Most read articles by the same author(s)