ConcreteD
This command is used to construct a concrete material based on the Chinese design code.
uniaxialMaterial ConcreteD $matTag $fc $epsc $ft $epst
$Ec $alphac $alphat <$cesp> <$etap>
matTag
|
integer tag identifying material |
fc
|
concrete compressive strength * |
epsc
|
concrete strain at corresponding to compressive strength* |
ft
|
concrete tensile strength * |
epst
|
concrete strain at corresponding to tensile strength* |
Ec
|
concrete initial Elastic modulus* |
alphac
|
compressive descending parameter* |
alphat
|
tensile descending parameter* |
cesp
|
plastic parameter, recommended values: 0.2~0.3* |
etap
|
plastic parameter, recommended values: 1.0~1.3* |
NOTES:
- Concrete compressive strength and the corresponding strain should be input as
negative values.
- The value \(fc/\)epsc and \(ft/\)epst should be smaller than $Ec.
- The default value for $cesp and $etap are 0.25 and 1.15, respectively.
EXAMPLE:
Example 1: Simulation of compressive test in Karson and Jirsa (1969).
uniaxialMaterial ConcreteD 1 -27.6 -0.002 3 0.0001 35000 1.0 0.1 0.25 1.15
REFERENCES:
- Karsan, I. D., and Jirsa, J. O. (1969). “Behavior of concrete under compressive loadings.” Journal of the Structural Division, 95(12), 2535-2563.
- Ministry of Housing and Urban-Rural Development of the People’s Republic of China. (2010). “Code for design of concrete structures.” GB50010-2010, Beijing, China.
- Ren, X. D. (2010). Multi-scale based stochastic damage constitutive theory for concrete. Doctoral dissertation, Tongji University, Shanghai. (in Chinese)
- Wu, J. Y., Li, J., and Faria, R. (2006). “An energy release rate-based plastic-damage model for concrete.” International Journal of Solids and Structures, 43(3), 583-612.
- Zeng, S. J. (2012). Dynamic Experimental Research and Stochastic Damage Constitutive Model for Concrete. Doctoral dissertation, Tongji University, Shanghai. (in Chinese)
Code Developed By:
Zengyong Wan, Decheng Feng, Xiaodan Ren, Jie Li, College of Civil Engineering, Tongji University,