Gradient enhanced thermo-mechanical damage model for concrete at high temperatures including transient thermal creep
| Autor: | Nenad Bićanić, Claus V. Nielsen, Chris J. Pearce |
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| Rok vydání: | 2004 |
| Předmět: |
Materials science
Steady state Constitutive equation Computational Mechanics Stiffness Thermodynamics Geotechnical Engineering and Engineering Geology Finite element method Creep Mechanics of Materials medicine Thermomechanical analysis General Materials Science Transient (oscillation) Deformation (engineering) Composite material medicine.symptom |
| Zdroj: | International Journal for Numerical and Analytical Methods in Geomechanics. 28:715-735 |
| ISSN: | 1096-9853 0363-9061 |
| Popis: | A thermo-mechanical model for concrete under transient high temperatures is presented. Particular emphasis is placed on the transient thermal creep model, which can be seen as an extension of Thelandersson's formulation, and the gradient-enhanced damage model that has been extended here to include temperature dependency. Degradation of the material stiffness due to exposure to elevated temperatures is included via a simple thermal damage model. The model's performance is illustrated on several benchmark problems under both transient and steady state heating conditions. |
| Databáze: | OpenAIRE |
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