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

Kai Da Dai; Sheng Tao Li; Peng Wan Chen

doi:10.15918/j.tbit1001-0645.2018.02.001

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

Kai Da Dai, Sheng Tao Li, Peng Wan Chen

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

7 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 language	English
Pages (from-to)	111-117
Number of pages	7
Journal	Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume	38
Issue number	2
DOIs	https://doi.org/10.15918/j.tbit1001-0645.2018.02.001
Publication status	Published - 1 Feb 2018

Keywords

Extend finite element
Fracture
Numerical simulation
PBX explosives
The Brazilian test

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10.15918/j.tbit1001-0645.2018.02.001

Cite this

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title = "Study on Fracture Behavior of the Brazilian Test of PBX Explosives Based on XFEM",

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.",

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AU - Chen, Peng Wan

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N2 - 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.

AB - 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.

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KW - Fracture

KW - Numerical simulation

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KW - The Brazilian test

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

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