Study on Fracture Behavior of the Brazilian Test of PBX Explosives Based on XFEM

Kai Da Dai, Sheng Tao Li, Peng Wan Chen

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

In order to investigate the effects of different loading methods in the Brazilian test on indirect tensile mechanical behavior of PBX explosives, the deformation, damage and failure process in the Brazilian test, the arc Brazilian and the rubber-cushion Brazilian tests were simulated by using extended finite element method(XFEM). The distribution of displacement and stress were obtained. The effects of different loading methods on mechanical response, deformation and fracture were analyzed. The results show that the fracture path and the distribution of displacement and stress agree well with the experimental and analytical values. Compared with the Brazilian test, the arc Brazilian test and the rubber-cushion Brazilian test can reduce contact stress and help to prevent the generation of secondary cracks. It indicates that the rubber-cushion Brazilian test is better for measuring the tensile strength of PBX.

Original languageEnglish
Pages (from-to)111-117
Number of pages7
JournalBeijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume38
Issue number2
DOIs
Publication statusPublished - 1 Feb 2018

Keywords

  • Extend finite element
  • Fracture
  • Numerical simulation
  • PBX explosives
  • The Brazilian test

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