Nonlocal Mazars damage model for concrete - MazarsModelnl

The nonlocal variant of Mazars damage model for concrete. Model based on nonlocal averaging of equivalent strain. The nonlocal averaging acts as a powerful localization limiter. The bell-shaped nonlocal averaging function is used. The model description and parameters are summarized in Tab. 31.

Table 31: Nonlocal Mazars damage model - summary.
Description Nonlocal Mazars damage model for concrete
Record Format MazarsModelnl r(rn) # E(rn) # n(rn) # e0(rn) # ac(rn) # bc(rn) # beta(rn) # version(in) # at(rn) # [ bt(rn) #] r(rn) # tAlpha(rn) #
Parameters - num material model number
  - d material density
  - E Young modulus
  - n Poisson ratio
  - maxOmega limit maximum damage, use for convergency improvement
  - tAlpha thermal dilatation coefficient
  - version Model variant. if 0 specified, the original form $ g_t= 1.0-(1.0-A_t)*\varepsilon_0/\kappa - A_t*\exp(-B_t*(\kappa-\varepsilon_0));
$ of tension damage evolution law is used, if equal 1, the modified law used which asymptotically tends to zero $ g_t = 1.0-(\varepsilon_0/\kappa)*\exp((\varepsilon_0-\kappa)/A_t)$
  - ac,bc material parameters related to the shape of uniaxial compression curve (A sample set used by Saouridis is $ A_c =
1.34, B_c = 2537$
  - at, [bt] material parameters related to the shape of uniaxial tension curve. Meaning dependent on version parameter.
  - beta coefficient reducing the effect of damage under response under shear. Default value set to 1.06
  - r parameter specifying the width of nonlocal averaging zone
Supported modes 3dMat, PlaneStress, PlaneStrain, 1dMat

Borek Patzak