Theoretical calculation of the fragment initial velocity following aerial explosion of the cylindrical warhead with two terminals

1st International Conference on Frontiers of Materials Synthesis and Processing

材料科学;化学

Hu, Nianming^1 ; Zhu, Xi^1 ; Chen, Changhai^1

Department of Warship Engineering, Naval University of Engineering, Wuhan

430033, China^1

关键词: Calculation results;    Cylindrical warheads;    Energy conservation principle;    Initial velocities;    Terminal velocity;    Theoretical calculation model;    Theoretical calculations;    Theoretical modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/274/1/012049/pdf
DOI  :  10.1088/1757-899X/274/1/012049

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to study the fragment initial velocity distribution of the cylindrical warhead with terminals and exploded in the air, this paper builds a theoretical calculation model of the side-wall and terminal velocity of the warhead with two terminals based on the energy conservation principle, and considering the explosive energy distribution and proportion. The calculation results obtained by the theoretical model are compared with the experimental results of previous scholars. In this paper, the influence of the warhead L/D and C/M on the side-wall and terminal initial velocity is examined. A good agreement between the theoretical calculation results and the experimental results of previous scholars is observed. This verifies feasibility of the calculation method proposed in this paper. When the warhead L/D is smaller than 2, along with increase of L/D, the side-wall fragment velocity increases and maintains at certain value. In terms of the terminal fragment initial velocity, when the warhead L/D is close to 1, the initial velocity is larger; but, when the L/D is larger than 1, the terminal fragment initial velocity decreases significantly.