Nonlinear Numerical Simulation to Thermo-elastic-plastic Creep Constitutive Equation for Concrete Subjected to Fire

In order to discuss the material behavior of concrete subjected to fire, based on elastic-plastic theories, considering the variation of material properties with temperature, the general incremental thermo-elastic-plastic creep constitutive equation is derived in consideration of temperature and cre...

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Vydáno v:2010 Third International Joint Conference on Computational Sciences and Optimization Ročník 1; s. 99 - 102
Hlavní autoři: Zhenqing Wang, Dalei Zhu, Mu Qiao, Yulai Han
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.05.2010
Témata:
Building materials
Capacitive sensors
Concrete
constitutive equation
Creep
fire
Fires
Material properties
Nonlinear equations
Numerical simulation
Temperature
Testing
thermo-elastic-plastic
ISBN:1424468124, 9781424468126
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Shrnutí:In order to discuss the material behavior of concrete subjected to fire, based on elastic-plastic theories, considering the variation of material properties with temperature, the general incremental thermo-elastic-plastic creep constitutive equation is derived in consideration of temperature and creep deformation. According to Drucker-Prager yield rules, the incremental thermo- elastic-plastic creep constitutive equations for concrete are obtained. The algorithms of backward Euler integration and implicit integration are adopted for the numerical simulation to the constitutive equation. It is concluded from the numerical results that the creep strain of concrete at elevated temperature can not be ignored. The correctness and applicability of the constitutive equations are verified by the test results of relevant reference.
ISBN:1424468124
9781424468126
DOI:10.1109/CSO.2010.26