|Table of Contents|

Influencing factors of penetration efficiency for projectiles’ highspeed penetration into concrete targets

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2014年03期
Page:
390-
Research Field:
Publishing date:

Info

Title:
Influencing factors of penetration efficiency for projectiles’ highspeed penetration into concrete targets
Author(s):
Song Meili1Wang Xiaoming1Zhao Xifang2Li Wenbin1Zhang Zhaojun1
1.Ministerial Key Laboratory of ZNDY,NUST,Nanjing 210094,China; 2.Nanjing Research Institute of Electronics Technology,Nanjing 210039,China
Keywords:
projectileshighspeed penetrationconcrete targetspenetration efficiencypenetration depthimpact velocityconcrete uniaxial compressive strengthwarhead shape factorprojectile aspect ratiosprojectile materials
PACS:
O385
DOI:
-
Abstract:
In order to study the variation of the maximum penetration depth with velocity when projectiles penetrate into concrete targets in highspeed,the concept of penetration efficiency is defined as the ratio of penetration depth to velocity.For a certain projectile and target system,the projectile’s impact velocity limit corresponding to the maximum penetration efficiency is researched by experimental data and numerical simulations.The inference of projectiles’ impact velocity on the penetration efficiency assumes a parabola.The penetration efficiency increases first and then decreases with the increase of the velocity.Before the penetration efficiency meets the limit,the penetration depth increases greatly with the increase of the velocity.When the impact velocity limit corresponding to the maximum penetration efficiency increases by 5% approximately,the penetrating depth and ability achieve the highest.The concrete uniaxial compressive strength,warhead shape factor,projectile aspect ratio,strength and machinery functions of projectile materials influence the penetration efficiency significantly.

References:

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Last Update: 2014-06-30