4.14.2.11. ConcreteCM

uniaxialMaterial('ConcreteCM', matTag, fpcc, epcc, Ec, rc, xcrn, ft, et, rt, xcrp, mon, '-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)

mon

optional, monotonic stress-strain relationship only: mon=1 (invoked in FSAM only), mon=0 (no impact since monotonic)

'-GapClose' (str)

optional, denote next parameter is GapClose

GapClose (float)

optional, GapClose = 0, less gradual gap closure (default); GapClose = 1, more gradual gap closure

See also

Notes