Bifurcation Analyses of Steel and Concrete with Rate-Dependent Properties. Part One: Model Formulation and Verification

Authors: Liu Y.; Shen L.; Chen Z.

Source: Advances in Structural Engineering, Volume 4, Number 4, 1 October 2001 , pp. 217-224(8)

Publisher: Multi-Science Publishing Co Ltd

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Abstract:

The effects of strain rate on the mechanical properties of carbon steel and plain concrete are investigated through a rate-dependent elasto-plasticity model and rate-dependent elasto-damage model, respectively. Continuum tangent stiffness tensors are derived for both models so that bifurcation analyses can be performed to identify the onset of material failure. Three-dimensional constitutive model solvers are designed and the numerical results are compared with the experimental data to verify the proposed models.

Keywords: BIFURCATION; DAMAGE; PLASTICITY; RATE-DEPENDENCY

Document Type: Research article

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