Three-phase 2D model of long-rod penetrating semi-infinite metal targets considering variation in nose shape考虑弹头形状变化的长杆弹侵彻半无限金属靶的三阶段2D理论模型

被引：0

作者：

Yangcun Liu

Yongjun Deng

Xiaowei Chen

Yong Yao

机构：

[1] Southwest University of Science and Technology,School of Civil Engineering and Architecture

[2] Shock and Vibration of Engineering Materials and Structures Key Lab of Sichuan Province,Advanced Research Institute of Multidisciplinary Science

[3] Beijing Institute of Technology,The State Key Lab of Explosion Science and Technology

[4] Beijing Institute of Technology,undefined

来源：

Acta Mechanica Sinica | 2022年 / 38卷

关键词：

Long-rod penetration; Nose shape; 2D model; Initial transient phase; Secondary penetration phase;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The nose shape effect on long-rod penetration was investigated by establishing numerical 2D models with different original nose shapes. The variations in nose shapes and the mass erosion rate of the rods in the transient phase, primary penetration phase, and secondary penetration phase were adequately analyzed by two dimensionless parameters, i.e., the nose shape factor N* and the diameter ratio of the rod nose and shank η. In general, N*, η and the mass erosion rate of the rod vary distinctly in different phases, i.e., unsteady in the initial transient and the secondary penetration phases, and quasi-steady in the primary penetration phase. Furthermore, a relationship between the mass erosion of the rod and the variation in the nose shape was established. A three-phase 2D model of long-rod penetration was further constructed by considering the variations in nose shape. This research may provide a reference to improve the theoretical model of long-rod penetration.

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