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Updated: Aug 15, 2026
09:12
A Method for Studying the Temperature Dependence of Dynamic Fracture and Fragmentation
Published on: June 28, 2015
An anisotropic thermomechanical damage model for concrete at transient elevated temperatures
1University of Southern Queensland Toowoomba 4350, Queensland, Australia. bakerg@usq.edu.au
Summary
This study presents a new anisotropic thermomechanical damage model for concrete under high stress and transient temperatures. The model adheres to thermodynamic laws, offering insights into concrete behavior in extreme environments.
Area of Science:
- Engineering
- Materials Science
- Thermodynamics
Background:
- Assessing concrete integrity at elevated temperatures is crucial for structures in fire, smelting, or nuclear environments.
- Existing models often simplify the complex thermomechanical behavior of concrete under stress and heat.
Purpose of the Study:
- To develop a fully coupled anisotropic thermomechanical damage model for concrete.
- To ensure the model rigorously adheres to the fundamental laws of thermodynamics.
Main Methods:
- Development of a coupled anisotropic thermomechanical damage model.
- Analytical derivation of thermodynamic properties like specific heat and entropy evolution.
- Identification of the complete anisotropic, thermomechanical damage surface.
Main Results:
- A novel interpretation of specific heat and entropy evolution derived from thermodynamics.
- Complete identification of the anisotropic, thermomechanical damage surface for concrete.
- Demonstration of the model's computational stability and thermodynamic consistency.
Conclusions:
- The developed model accurately captures concrete behavior under high stress and transient temperatures.
- The model's adherence to thermodynamics provides a robust framework for structural integrity assessment.
- This research offers a significant advancement in modeling thermomechanical damage in concrete.
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