Viscoplastic Hoffman consistency model for concrete

A novel viscoplastic model for concrete and its performance under dynamic loading is presented. The model is based on the so-called viscoplastic consistency model, recently proposed by Wang. The model makes use of the Hoffman yield function in its isotropic form and is augmented to include seperate...

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Bibliographic Details
Published in:Computers & structures 2001, Vol.79 (1), p.7-19
Main Authors: Winnicki, A., Pearce, C.J., Bićanić, N.
Format: Article
Language:English
Subjects:
Closest-point projection
Concrete
Consistency model
Hoffman model
Rate dependency
Viscoplasticity
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Summary:A novel viscoplastic model for concrete and its performance under dynamic loading is presented. The model is based on the so-called viscoplastic consistency model, recently proposed by Wang. The model makes use of the Hoffman yield function in its isotropic form and is augmented to include seperate hardening/softening behaviour in tension and compression. An implicit backward Euler integration scheme is adopted for the integration of the rate equations. The performance of the model is illustrated on a number of numerical examples at the material point level and on the structural level with the cylinder split test.
ISSN:0045-7949
1879-2243
DOI:10.1016/S0045-7949(00)00110-3