Characterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformity

Accurate characterisation of dynamic behaviour of ceramics requires the reliable split-Hopkinson pressure bar (SHPB) technique and the condition of uniaxial homogeneous specimen deformation. In this study, an experimentally validated 3D finite element model of the full scale SHPB experiment was deve...

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Main Authors: Zhiyong Wang, Peifeng Li
Format: Article
Language:English
Published: AIP Publishing LLC 2015-10-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4934793
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spelling doaj-d4b93de23a80481b8de6a965e481f4f92020-11-25T00:21:07ZengAIP Publishing LLCAIP Advances2158-32262015-10-01510107224107224-1610.1063/1.4934793059510ADVCharacterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformityZhiyong Wang0Peifeng Li1School of Mechanical and Aerospace Engineering, Nanyang Technological University, SingaporeSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, SingaporeAccurate characterisation of dynamic behaviour of ceramics requires the reliable split-Hopkinson pressure bar (SHPB) technique and the condition of uniaxial homogeneous specimen deformation. In this study, an experimentally validated 3D finite element model of the full scale SHPB experiment was developed to quantitatively evaluate the wave propagation in the bars and the stress distribution/evolution in the alumina specimen. Wave signals in both the SHPB experiments and the finite element model were analysed to characterise the dynamic behaviour of alumina. It was found that the equilibrium of both stresses within the specimen and forces at the specimen ends can be established in the intermediate stage of deformation. The validity of stress uniformity in the alumina specimen supports the assumption of uniaxial homogeneous specimen deformation in the SHPB and validates the characterisation of dynamic behaviour of alumina ceramics.http://dx.doi.org/10.1063/1.4934793
collection DOAJ
language English
format Article
sources DOAJ
author Zhiyong Wang
Peifeng Li
spellingShingle Zhiyong Wang
Peifeng Li
Characterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformity
AIP Advances
author_facet Zhiyong Wang
Peifeng Li
author_sort Zhiyong Wang
title Characterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformity
title_short Characterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformity
title_full Characterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformity
title_fullStr Characterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformity
title_full_unstemmed Characterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformity
title_sort characterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformity
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2015-10-01
description Accurate characterisation of dynamic behaviour of ceramics requires the reliable split-Hopkinson pressure bar (SHPB) technique and the condition of uniaxial homogeneous specimen deformation. In this study, an experimentally validated 3D finite element model of the full scale SHPB experiment was developed to quantitatively evaluate the wave propagation in the bars and the stress distribution/evolution in the alumina specimen. Wave signals in both the SHPB experiments and the finite element model were analysed to characterise the dynamic behaviour of alumina. It was found that the equilibrium of both stresses within the specimen and forces at the specimen ends can be established in the intermediate stage of deformation. The validity of stress uniformity in the alumina specimen supports the assumption of uniaxial homogeneous specimen deformation in the SHPB and validates the characterisation of dynamic behaviour of alumina ceramics.
url http://dx.doi.org/10.1063/1.4934793
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AT peifengli characterisationofdynamicbehaviourofaluminaceramicsevaluationofstressuniformity
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