4.13.2.11. ConcreteCM¶
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uniaxialMaterial
('ConcreteCM', matTag, fpcc, epcc, Ec, rc, xcrn, ft, et, rt, xcrp, '-GapClose', GapClose=0) This command is used to construct a uniaxialMaterial ConcreteCM (Kolozvari et al., 2015), which is a uniaxial hysteretic constitutive model for concrete developed by Chang and Mander (1994).
matTag
(int)integer tag identifying material fpcc
(float)Compressive strength (\(f'_c\)) epcc
(float)Strain at compressive strength (\(\epsilon'_c\)) Ec
(float)Initial tangent modulus (\(E_c\)) rc
(float)Shape parameter in Tsai’s equation defined for compression (\(r_c\)) xcrn
(float)Non-dimensional critical strain on compression envelope (\(\epsilon^{-}_{cr}\), where the envelope curve starts following a straight line) ft
(float)Tensile strength (\(f_t\)) et
(float)Strain at tensile strength (\(\epsilon_t\)) rt
(float)Shape parameter in Tsai’s equation defined for tension (\(r_t\)) xcrp
(float)Non-dimensional critical strain on tension envelope (\(\epsilon^{+}_{cr}\), where the envelope curve starts following a straight line - large value [e.g., 10000] recommended when tension stiffening is considered) GapClose
(float)GapClose = 0, less gradual gap closure (default); GapClose = 1, more gradual gap closure
See also