PREFORMED FRAGMENT VELOCITY DISTRIBUTION OF ELLIPTICAL CROSS-SECTION PROJECTILE

Ximin  Deng; Haijun Wu; Xiang  Yang; Wenhui  Xie; Fenglei  Huang

doi:10.1590/1679-78256835

PREFORMED FRAGMENT VELOCITY DISTRIBUTION OF ELLIPTICAL CROSS-SECTION PROJECTILE

Authors

Ximin Deng Stake Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China https://orcid.org/0000-0003-4911-4079
Haijun Wu Stake Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China https://orcid.org/0000-0001-5235-2858
Xiang Yang Stake Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China / COMAC ShangHai Aircraft Design and Research Institute, Shanghai 201210, China https://orcid.org/0000-0002-5802-5214
Wenhui Xie Chong Qing Hongyu Precision Industry Group Co. LTD, Chongqing 402760, China https://orcid.org/0000-0003-1949-6512
Fenglei Huang Stake Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China https://orcid.org/0000-0002-6039-6436

DOI:

https://doi.org/10.1590/1679-78256835

Abstract

IN THE FIELD OF WARHEAD DESIGN, NON-CYLINDRICAL WARHEAD, ESPECIALLY ELLIPTICAL CROSS-SECTION WARHEAD, HAS RECEIVED CONSIDERABLE ATTENTION. IN THIS STUDY, THE INITIAL VELOCITY AND DISTRIBUTION CHARACTERISTICS OF THE PREFORMED FRAGMENTS OF A COLUMNAR PROJECTILE WITH AN ELLIPTICAL CROSS-SECTION WERE EXAMINED. TO OBTAIN THE VELOCITY DISTRIBUTION OF THE FRAGMENTS IN THIS KIND OF PROJECTILE, THREE ELLIPTICAL CROSS-SECTION PROJECTILES WITH DIFFERENT GEOMETRIC SIZES WERE TEST BASED ON THE STATIC DETONATION TESTS. THEN, THE NUMERICAL MODELS OF THE ELLIPTICAL CROSS-SECTION PROJECTILE HAVE BEEN ESTABLISHED AND VALIDATED ACCORDING TO THE EXPERIMENT RESULTS. BESIDES, TWO KINDS OF INITIATION TYPES WERE STUDIED BY THE SIMULATION MODEL, AND THE RESULTS INDICATE THAT NOT ONLY THE GEOMETRIC SIZE BUT THE INITIATION TYPE DO GREAT INFLUENCES ON THE FRAGMENT VELOCITY DISTRIBUTION IN THE DIRECTION OF THE AXIS. AN EMPIRICAL MODEL WAS PROPOSED BASED ON THE FRAGMENT TWO-STEP ACCELERATION PROGRESS, AND IT WAS IN GOOD ACCORDANCE WITH NUMERICAL RESULTS.

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Published

2021-11-23

Issue

Vol. 19 No. 1 (2022)

Section

Articles

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