Trajectory and loads for oblique penetration into concrete targets by rigid projectile

Xudong Gao, Q. M. Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

This paper studies the trajectories and loads of rigid projectiles penetrating into concrete targets with oblique and attack angles, based on differential area force law with an empirical model of free surface effect. Investigations are conducted using 450kg, 300-mm-diameter ogive-nose projectiles, with striking velocities from 600 to 1000m/s, oblique angles from 5° to 25° and attack angles from 1° to 5°. The characteristics of trajectories and loads are summarized. An important characteristic is that the turning of trajectory direction only happens at the earlier stage of penetration, and then the trajectory converge to straight line and keep linear motion until the end. Consistent with the trajectory, the attack angle, lateral acceleration and moment all occur at this stage. The axial acceleration is mainly determined by the initial velocity, but the lateral acceleration and moment are determined not only by initial velocity but also by the initial oblique and/or attack angles. In terms of maximum loads of lateral acceleration and moment, the combined influence of initial oblique and attack angles is larger than a single factor. There exist a proper negative attack angle which can minimize the trajectory turning in oblique penetration cases.

Original languageEnglish
Title of host publicationTerminal Ballistics, Explosion Mechanics, Vulnerability and Survivability
EditorsV. K. Saraswat, G. Satheesh Reddy, Clive Woodley
PublisherDEStech Publications Inc.
Pages1807-1818
Number of pages12
ISBN (Electronic)9781605956107
Publication statusPublished - 2019
Externally publishedYes
Event31st International Symposium on Ballistics, BALLISTICS 2019 - Hyderabad, India
Duration: 4 Nov 20198 Nov 2019

Publication series

NameProceedings - 31st International Symposium on Ballistics, BALLISTICS 2019
Volume2

Conference

Conference31st International Symposium on Ballistics, BALLISTICS 2019
Country/TerritoryIndia
CityHyderabad
Period4/11/198/11/19

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