Stability analyses of the mass abrasive projectile high-speed penetrating into concrete target. Part Ⅰ： Engineering model for the mass loss and nose-blunting of ogive-nosed projectiles

The mass loss and nose blunting of a projectile during high-speed deep penetration into concrete target may cause structural destruction and ballistic trajectory instability of the penetrator,obviously reducing the penetration efficiency of penetrator.Provided that the work of friction between proje...

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Bibliographic Details
Published inActa mechanica Sinica Vol. 30; no. 6; pp. 933 - 942
Main Authors Wu, Hao, Chen, Xiao-Wei, He, Li-Lin, Fang, Qin
Format Journal Article
LanguageEnglish
Published Heidelberg The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences 01.12.2014
Subjects
Classical and Continuum Physics
Computational Intelligence
Concretes
Empirical analysis
Engineering
Engineering Fluid Dynamics
High speed
Mathematical models
Nose
Penetration
Penetrators
Projectiles
Research Paper
Stability
Theoretical and Applied Mechanics
大众
工程模型
混凝土
磨料
稳定性分析
质量损失
高速侵彻
鼻子
Mass loss
High-speed penetration
Concrete
Nose-blunting
Projectile
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Summary:The mass loss and nose blunting of a projectile during high-speed deep penetration into concrete target may cause structural destruction and ballistic trajectory instability of the penetrator,obviously reducing the penetration efficiency of penetrator.Provided that the work of friction between projectile and target is totally transformed into the heat to melt penetrator material at its nose surface,an engineering model is established for the mass loss and nose-blunting of the ogive-nosed projectile.A dimensionless formula for the relative mass loss of projectile is obtained by introducing the dimensionless impact function I and geometry function N of the projectile.The critical value V c0of the initial striking velocity is formulated,and the mass loss of projectile tends to increase weakly nonlinearly with I/N when V0〉V c0,whilst the mass loss is proportional to the initial kinetic energy of projectile when V0
Bibliography:The mass loss and nose blunting of a projectile during high-speed deep penetration into concrete target may cause structural destruction and ballistic trajectory instability of the penetrator,obviously reducing the penetration efficiency of penetrator.Provided that the work of friction between projectile and target is totally transformed into the heat to melt penetrator material at its nose surface,an engineering model is established for the mass loss and nose-blunting of the ogive-nosed projectile.A dimensionless formula for the relative mass loss of projectile is obtained by introducing the dimensionless impact function I and geometry function N of the projectile.The critical value V c0of the initial striking velocity is formulated,and the mass loss of projectile tends to increase weakly nonlinearly with I/N when V0〉V c0,whilst the mass loss is proportional to the initial kinetic energy of projectile when V0
Projectile;High-speed penetration;Concrete;Mass loss;Nose-blunting
11-2063/O3
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0567-7718
1614-3116
DOI:10.1007/s10409-014-0090-1