Validation Of A Viscodamage Model For The Dynamic Behaviour Of Concrete

The aim of this work is to construct a viscodamage model in order to describe the dynamic behaviour of concrete. The identification is obtained from compression tests made with Hopkinson's bars for a range of strain rate going up to 700 s"\ We show that it is necessary to take into account...

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Bibliographic Details
Published inWIT Transactions on the Built Environment Vol. 35
Main Authors Dube, J F, Wielgosz, C, A. Kanji Nanji
Format Journal Article
LanguageEnglish
Published Southampton W I T Press 01.01.1998
Subjects
Compression
Compression tests
Computer simulation
Constitutive relationships
Mathematical models
Parameter identification
Strain rate
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Summary:The aim of this work is to construct a viscodamage model in order to describe the dynamic behaviour of concrete. The identification is obtained from compression tests made with Hopkinson's bars for a range of strain rate going up to 700 s"\ We show that it is necessary to take into account a dependent strain rate model and both traction and compression parts of the behaviour of concrete to identify its parameters. Moreover a complete numerical simulation of the experiments on a sample must be done to obtain certain values of the model coefficients. 1 Introduction Rate dependent constitutive relations are very important to take into account in analyses of concrete in transient dynamics with high strain rates such as blast
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ISSN:1746-4498
1743-3509
DOI:10.2495/SU980681