4.13.2.11. ConcreteCM

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

Notes