Three-phase 2D model of long-rod penetrating semi-infinite metal targets considering variation in nose shape

被引：1

作者：

Liu, Yangcun ^{[1
]}

Deng, Yongjun ^{[1
,2
]}

Chen, Xiaowei ^{[3
,4
]}

Yao, Yong ^{[1
,2
]}

机构：

[1] Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang 621010, Sichuan, Peoples R China

[2] Shock & Vibrat Engn Mat & Struct Key Lab Sichuan, Mianyang 621010, Sichuan, Peoples R China

[3] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China

[4] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China

来源：

ACTA MECHANICA SINICA | 2022年 / 38卷 / 12期

基金：

中国国家自然科学基金;

关键词：

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

D O I：

10.1007/s10409-022-22090-x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

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 eta. In general, N*, eta 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.

引用

页数：14

共 28 条

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