.. include:: sub.txt ================== ConcreteD ================== .. function:: uniaxialMaterial('ConcreteD', matTag, fc, epsc, ft, epst, Ec, alphac, alphat, cesp=0.25,etap=1.15) :noindex: This command is used to construct a concrete material based on the Chinese design code. =================================== =========================================================================== ``matTag`` |int| integer tag identifying material ``fc`` |float| concrete compressive strength ``epsc`` |float| concrete strain at corresponding to compressive strength ``ft`` |float| concrete tensile strength ``epst`` |float| concrete strain at corresponding to tensile strength ``Ec`` |float| concrete initial Elastic modulus ``alphac`` |float| compressive descending parameter ``alphat`` |float| tensile descending parameter ``cesp`` |float| plastic parameter, recommended values: 0.2~0.3 ``etap`` |float| plastic parameter, recommended values: 1.0~1.3 =================================== =========================================================================== .. note:: #. 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``. .. seealso:: `Notes `_