Experimental Study on The Effect of Fracture Strain on the Fragmentation Effect of PELE

Authors

  • Yuheng Liu School of Equipment Engineering, Shenyang Ligong University, Shenyang,110158, China https://orcid.org/0009-0001-5622-819X
  • Lizhi Xu School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing,210094, China https://orcid.org/0000-0002-8966-7201
  • Heling Zheng School of Equipment Engineering, Shenyang Ligong University, Shenyang,110158, China
  • Meng Xu School of Equipment Engineering, Shenyang Ligong University, Shenyang,110158, China
  • Wenzheng Lv School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing,210094, China
  • Zhonghua Du School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing,210094, China

DOI:

https://doi.org/10.1590/1679-78257496

Abstract

The fragmentation effect of PELE refers to the fragmentation of the jacket after PELE penetrates the metal target plate. Three sets of 30CrMnSiA tensile samples with different hardness were pulled to obtain the corresponding maximum principal tensile stress and fracture strain of the material. It was found that the greater the hardness, the smaller the fracture strain, and the more easily to shear failure; Then, PELE penetration metal thin target fragment recovery test was carried out. It was found that only HRC50 jacket had compression shear and other brittle material damage characteristics and produced ideal fragmentation effect during penetration; The results show that the greater the target velocity is, the greater the critical value of its own material breaking is. When its own breaking strain is less than the critical value, the jacket can play a fragmentation effect; For PELE penetrator with the same material performance that meet the crushing conditions, the greater the impact velocity, the more the number of jacket fragments and the larger the distribution radius of fragments.

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Published

2023-06-21

Issue

Vol. 20 No. 7 (2023)

Section

Articles

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