OBLIQUE PENETRATION OF TUNGSTEN ALLOY ROD TO FINITE-THICKNESS METAL PLATE

XI CHEN; CHUN CHENG; ZHONGHUA DU; CHENGXIN DU; LIZHI XU; XIAODONG WANG

doi:10.1590/1679-78255724

OBLIQUE PENETRATION OF TUNGSTEN ALLOY ROD TO FINITE-THICKNESS METAL PLATE

Authors

XI CHEN SCHOOL OF MECHANICAL ENGINEERING, NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY, NANJING 210094, CHINA HTTPS://ORCID.ORG/0000-0003-4718-5332
CHUN CHENG SCHOOL OF MECHANICAL ENGINEERING, NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY, NANJING 210094, CHINA HTTPS://ORCID.ORG/0000-0002-3147-436X
ZHONGHUA DU SCHOOL OF MECHANICAL ENGINEERING, NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY, NANJING 210094, CHINA HTTPS://ORCID.ORG/0000-0002-8673-5926
CHENGXIN DU SCHOOL OF MECHANICAL ENGINEERING, NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY, NANJING 210094, CHINA HTTPS://ORCID.ORG/0000-0002-5721-1146
LIZHI XU SCHOOL OF MECHANICAL ENGINEERING, NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY, NANJING 210094, CHINA HTTPS://ORCID.ORG/0000-0002-8966-7201
XIAODONG WANG SCHOOL OF MECHANICAL ENGINEERING, NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY, NANJING 210094, CHINA HTTPS://ORCID.ORG/0000-0002-3377-5932

DOI:

https://doi.org/10.1590/1679-78255724

Abstract

IN ORDER TO STUDY THE CRITICAL RICOCHET VELOCITY AND CRITICAL PENETRATION VELOCITY OF TUNGSTEN ALLOY ROD OBLIQUELY PENETRATING A FINITE-THICKNESS METAL PLATE, EXPERIMENT AND NUMERICAL CALCULATION OF TUNGSTEN ALLOY ROD IMPACTING ON HOMOGENEOUS ARMOR STEEL PLATE WITH A THICKNESS OF 30MM AT AN ANGLE OF 60° WERE CARRIED OUT. COMPARED THE EXPERIMENTAL AND NUMERICAL RESULTS WITH THE RESULTS USING MODELS, IT IS FOUND THAT, THE RESULTS OF THE RICOCHET MODELS PROPOSED BY TATE, ROSENBERG AND STEVEN B FOR SEMI-INFINITE THICK PLATE ARE QUITE DIFFERENT FROM THOSE OF EXPERIMENT AND NUMERICAL CALCULATION, SO THEY CAN NOT BE APPLIED TO THE RICOCHET SITUATION OF FINITE-THICKNESS PLATE. THE CRITICAL PENETRATION VELOCITY MODEL PROPOSED BY DE MARRE AND ZHAO ARE IN GOOD AGREEMENT WITH THE NUMERICAL AND EXPERIMENTAL RESULTS, WHICH CAN PREDICT CRITICAL PENETRATION VELOCITY OF TUNGSTEN ALLOY ROD OBLIQUELY PENETRATING A FINITE-THICKNESS METAL PLATE WITH LARGE IMPACT ANGLE. THE PENETRATION DEPTH OF THE PROJECTILE UNDER THE CRITICAL RICOCHET VELOCITY IS ABOUT 1/3 OF THE THICKNESS OF THE TARGET PLATE, AND THE ANGLE BETWEEN THE EJECTION TRAJECTORY OF THE FRAGMENTS PRODUCED BY PROJECTILE AND TARGET PLATE AND PROJECTILE PENETRATION TRAJECTORY IS EXACTLY 90° IN THE FIRST PENETRATION STAGE.

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Published

2019-10-08

Issue

Vol. 16 No. 9 (2019)

Section

Articles

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