Title: Modelling and simulation on arc generatrix cone cover forming of shaped jet

Authors: Feng Zhu; WeiHua Zhu; J.L. Yan; Q. Zhao; Z.P. Zhou

Addresses: College of Science and College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing city, Jiangsu Province, 210098, China ' College of Science and College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing city, Jiangsu Province, 210098, China ' College of Science and College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing city, Jiangsu Province, 210098, China ' College of Science and College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing city, Jiangsu Province, 210098, China ' College of Science and College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing city, Jiangsu Province, 210098, China

Abstract: On the basis of the finite element method, central difference software LS-DYNA-970 platform, this paper using the Euler algorithm shows the simulation of the 3D jet forming. A study on the uniform thickness of curved cone-shaped cover is being executed, which reveals the metal-forming mechanism of various arc radius curved generatrix covers and a detailed study of the speed distribution in all parts of the formed jet penetrator. Studies have shown that under the same premise of drug cover in calibre and cone height, the jet formed by arc generatrix shaped cover inward opening can have a more uniform mass distribution, and can effectively inhibit the production of metal fracture in jet head, but the speed of the jet head is more decreased when compared with the model that arc generatrix opens outside. Such laws are more obvious as the generatrix radius becomes less and less. The results match the experimental results and agree well.

Keywords: LS-DYNA; 3D jet forming; metal forming; ALE; arbitrary Lagrangian-Eulerian; modelling; simulation; arc generatrix cone covers; finite element method; FEM; shaped jet; anti-armour warheads.

DOI: 10.1504/IJCAT.2013.054299

International Journal of Computer Applications in Technology, 2013 Vol.47 No.1, pp.23 - 31

Published online: 03 Jun 2013 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article