Meso-simulation and experimental research on the mechanical behavior of an energetic explosive

Qinxue Pan; Shuangyang Li; Yang Liu; Xiaoyu Xu; Meile Chang; Yunmiao Zhang

doi:10.3390/coatings11010064

Meso-simulation and experimental research on the mechanical behavior of an energetic explosive

Qinxue Pan^*, Shuangyang Li, Yang Liu, Xiaoyu Xu, Meile Chang, Yunmiao Zhang

^*Corresponding author for this work

School of Mechanical Engineering

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

7 Citations (Scopus)

Abstract

This study establishes a model for polymer-bonded explosives (PBX) using Digimat-FE. The model identifies the relationship between the material’s effective elastic modulus and the explosive particle volume fraction, shape and gradation, and porosity, as well as other factors. Further, finite element analysis of the stress distribution of the PBX composite material is performed, and the mathematical models between the ultrasonic attenuation coefficient, particle volume fraction, and ultrasonic frequency are established. Finally, an efficient ultrasonic nondestructive testing system is designed to determine the stress distribution and fine crack groups in the material. Experimental results indicate that the relative error of stress detection is within 15%, which meets the requirements of engineering applications.

Original language	English
Article number	64
Pages (from-to)	1-21
Number of pages	21
Journal	Coatings
Volume	11
Issue number	1
DOIs	https://doi.org/10.3390/coatings11010064
Publication status	Published - Jan 2021

Keywords

Effective elastic modulus
Energetic explosive
Nondestructive testing
Residual stress
Ultrasonic attenuation coefficient

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10.3390/coatings11010064

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title = "Meso-simulation and experimental research on the mechanical behavior of an energetic explosive",

abstract = "This study establishes a model for polymer-bonded explosives (PBX) using Digimat-FE. The model identifies the relationship between the material{\textquoteright}s effective elastic modulus and the explosive particle volume fraction, shape and gradation, and porosity, as well as other factors. Further, finite element analysis of the stress distribution of the PBX composite material is performed, and the mathematical models between the ultrasonic attenuation coefficient, particle volume fraction, and ultrasonic frequency are established. Finally, an efficient ultrasonic nondestructive testing system is designed to determine the stress distribution and fine crack groups in the material. Experimental results indicate that the relative error of stress detection is within 15%, which meets the requirements of engineering applications.",

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author = "Qinxue Pan and Shuangyang Li and Yang Liu and Xiaoyu Xu and Meile Chang and Yunmiao Zhang",

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T1 - Meso-simulation and experimental research on the mechanical behavior of an energetic explosive

AU - Pan, Qinxue

AU - Li, Shuangyang

AU - Liu, Yang

AU - Xu, Xiaoyu

AU - Chang, Meile

AU - Zhang, Yunmiao

PY - 2021/1

Y1 - 2021/1

N2 - This study establishes a model for polymer-bonded explosives (PBX) using Digimat-FE. The model identifies the relationship between the material’s effective elastic modulus and the explosive particle volume fraction, shape and gradation, and porosity, as well as other factors. Further, finite element analysis of the stress distribution of the PBX composite material is performed, and the mathematical models between the ultrasonic attenuation coefficient, particle volume fraction, and ultrasonic frequency are established. Finally, an efficient ultrasonic nondestructive testing system is designed to determine the stress distribution and fine crack groups in the material. Experimental results indicate that the relative error of stress detection is within 15%, which meets the requirements of engineering applications.

AB - This study establishes a model for polymer-bonded explosives (PBX) using Digimat-FE. The model identifies the relationship between the material’s effective elastic modulus and the explosive particle volume fraction, shape and gradation, and porosity, as well as other factors. Further, finite element analysis of the stress distribution of the PBX composite material is performed, and the mathematical models between the ultrasonic attenuation coefficient, particle volume fraction, and ultrasonic frequency are established. Finally, an efficient ultrasonic nondestructive testing system is designed to determine the stress distribution and fine crack groups in the material. Experimental results indicate that the relative error of stress detection is within 15%, which meets the requirements of engineering applications.

KW - Effective elastic modulus

KW - Energetic explosive

KW - Nondestructive testing

KW - Residual stress

KW - Ultrasonic attenuation coefficient

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Meso-simulation and experimental research on the mechanical behavior of an energetic explosive

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Keywords

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