Study on the strain-rate dependent dynamic constitutive equation of A12O3 ceramics

Xiao Qing Zhang; Xiao Hu Yao; Jian Guo Ning; Long Mao Zhao; Gui Tong Yang

Study on the strain-rate dependent dynamic constitutive equation of A1₂O₃ ceramics

Xiao Qing Zhang^*, Xiao Hu Yao, Jian Guo Ning, Long Mao Zhao, Gui Tong Yang

^*Corresponding author for this work

School of Mechatronical Engineering

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

18 Citations (Scopus)

Abstract

The dynamic mechanical properties of A1₂O₃ ceramics have been investigated using the classical and the improved techniques of Split Hopkinson Pressure Bar (SHPB). It is shown that the tested ceramic is nonlinear elastic-brittle material and insensitive to strain-rates in lower ranges but sensitive in higher ranges. The dynamic elasticity modulus and the dynamic compressive strength of the ceramic increase with the strain rate increasing. Based on the theory of damage mechanics, a uniaxial nonlinear elastic-brittle damage-modified constitutive model is proposed. The parameters of this model for the A1₂O₃ ceramic were obtained by fitting the SHPB test data. It is a strain-rate dependent damage-modified nonlinear elastic constitutive equation of A1₂O₃ ceramics.

Original language	English
Pages (from-to)	226-232
Number of pages	7
Journal	Baozha Yu Chongji/Expolosion and Shock Waves
Volume	24
Issue number	3
Publication status	Published - May 2004

Keywords

A1O ceramics
Damage
Dynamic constitutive equation
Dynamic mechanical properties
SHPB technology
Solid mechanics

Cite this

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title = "Study on the strain-rate dependent dynamic constitutive equation of A12O3 ceramics",

abstract = "The dynamic mechanical properties of A12O3 ceramics have been investigated using the classical and the improved techniques of Split Hopkinson Pressure Bar (SHPB). It is shown that the tested ceramic is nonlinear elastic-brittle material and insensitive to strain-rates in lower ranges but sensitive in higher ranges. The dynamic elasticity modulus and the dynamic compressive strength of the ceramic increase with the strain rate increasing. Based on the theory of damage mechanics, a uniaxial nonlinear elastic-brittle damage-modified constitutive model is proposed. The parameters of this model for the A12O3 ceramic were obtained by fitting the SHPB test data. It is a strain-rate dependent damage-modified nonlinear elastic constitutive equation of A12O3 ceramics.",

keywords = "A1O ceramics, Damage, Dynamic constitutive equation, Dynamic mechanical properties, SHPB technology, Solid mechanics",

author = "Zhang, {Xiao Qing} and Yao, {Xiao Hu} and Ning, {Jian Guo} and Zhao, {Long Mao} and Yang, {Gui Tong}",

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T1 - Study on the strain-rate dependent dynamic constitutive equation of A12O3 ceramics

AU - Zhang, Xiao Qing

AU - Yao, Xiao Hu

AU - Ning, Jian Guo

AU - Zhao, Long Mao

AU - Yang, Gui Tong

PY - 2004/5

Y1 - 2004/5

N2 - The dynamic mechanical properties of A12O3 ceramics have been investigated using the classical and the improved techniques of Split Hopkinson Pressure Bar (SHPB). It is shown that the tested ceramic is nonlinear elastic-brittle material and insensitive to strain-rates in lower ranges but sensitive in higher ranges. The dynamic elasticity modulus and the dynamic compressive strength of the ceramic increase with the strain rate increasing. Based on the theory of damage mechanics, a uniaxial nonlinear elastic-brittle damage-modified constitutive model is proposed. The parameters of this model for the A12O3 ceramic were obtained by fitting the SHPB test data. It is a strain-rate dependent damage-modified nonlinear elastic constitutive equation of A12O3 ceramics.

AB - The dynamic mechanical properties of A12O3 ceramics have been investigated using the classical and the improved techniques of Split Hopkinson Pressure Bar (SHPB). It is shown that the tested ceramic is nonlinear elastic-brittle material and insensitive to strain-rates in lower ranges but sensitive in higher ranges. The dynamic elasticity modulus and the dynamic compressive strength of the ceramic increase with the strain rate increasing. Based on the theory of damage mechanics, a uniaxial nonlinear elastic-brittle damage-modified constitutive model is proposed. The parameters of this model for the A12O3 ceramic were obtained by fitting the SHPB test data. It is a strain-rate dependent damage-modified nonlinear elastic constitutive equation of A12O3 ceramics.

KW - A1O ceramics

KW - Damage

KW - Dynamic constitutive equation

KW - Dynamic mechanical properties

KW - SHPB technology

KW - Solid mechanics

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AN - SCOPUS:4644239560

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JO - Baozha Yu Chongji/Expolosion and Shock Waves

JF - Baozha Yu Chongji/Expolosion and Shock Waves

IS - 3

ER -

Study on the strain-rate dependent dynamic constitutive equation of A1₂O₃ ceramics

Abstract

Keywords

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