The research about the effect of initiation point to the forming of cutting MEFP and the penetration characteristics

2017 2nd International Seminar on Advances in Materials Science and Engineering

Dong, X.L.^1 ; Li, W.B.^1 ; Shen, X.J.^1

ZNDY of Ministerial Key Laboratory, Nanjing University of Science and Technology, Nanjing

210094, China^1

关键词: 45 steel;    Divergence angle;    Dynamic finite element;    Fluid-solid coupling;    Head velocity;    LS-DYNA;    Penetration characteristic;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/231/1/012188/pdf
DOI  :  10.1088/1757-899X/231/1/012188

来源: IOP

【 摘 要 】

In order to study the effect of the initiation point position to the molding of cutting MEFP, divergence angle and 45 steel penetration, we used LS-DYNA dynamic finite element program, and adopted the fluid solid coupling method, then we made numerical simulation about the process of the formation of cutting MEFP and penetration plate, and the simulation results fit with the tests results. The research indicates that the head velocity of the formation of MEFP in bottom initiation increased by 27% than in top initiation, tail speed increased by 14%, divergence angle reduced by 39%, and penetration aperture reduced by 12%. The 25 sub-EFP formed by the warhead are possessed with certain quality and direction, and can penetrate 45 steel target of 9mm in 8m distance.