Oblique Penetration of a Circular Pipe Target by a Prefabricated Fragment

Author:

Wang Yajun1,Li Weibing1,Zhu Guili12,Li Wenbin1

Affiliation:

1. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China

2. System Engineering Institute of Sichuan Aerospace, Sichuan Academy of Aerospace Technology, Chengdu 610100, P. R. China

Abstract

For the oblique penetration of a circular pipe target by a prefabricated fragment, the finite element software LS-DYNA was used to build a computational model for the circular pipe considering the penetration by a cylindrical fragment from different directions. The failure characteristics of the pipe were acquired and the critical penetration velocity was calculated. The relationship between the initial velocity and critical angle of ricochet was found. The experiment was then conducted to verify the results obtained, indicating that the simulation results are in good agreement with the experimental ones. It was shown that the main critical failure pattern of a circular pipe is shear perforation or a penetrating crack. The critical penetration velocity is positively correlated with the direction angle [Formula: see text] and entry angle [Formula: see text]. For entry angles greater than 30, the critical penetration velocity increases with an increase in the direction angle, and this effect is stronger for higher direction angles. The critical angle of ricochet is positively correlated with the initial velocity of the fragment. The critical angle of ricochet tends to approach a constant of 60 as the initial velocity of the fragment increases.

Funder

National Natural Science Foundation of China

Publisher

World Scientific Pub Co Pte Lt

Subject

Applied Mathematics,Mechanical Engineering,Ocean Engineering,Aerospace Engineering,Building and Construction,Civil and Structural Engineering

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Analysis of Prefabricated Fragment Intrusion Damage Based on Complete Restart Technique;Lecture Notes in Mechanical Engineering;2023

2. Normal and Oblique Impact on Polyurea-Coated ASTM1045 Steel Plates by Small-Arms Projectiles;International Journal of Structural Stability and Dynamics;2022-03-03

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