4. Composition of the product field#

The result is enriched by a new field (named “FERRAILLAGE” in the data structure) whose components are:

If TYPE_STRUCTURE = “2D”:

  • a density of longitudinal reinforcement in the \(X\) direction of the element for the lower face of the element (\(\mathrm{DNSXI}\));

  • the equivalent for the upper side (\(\mathrm{DNSXS}\));

  • a density of longitudinal reinforcement in the \(Y\) direction of the element for the lower face of the element (\(\mathrm{DNSYI}\));

  • the equivalent for the upper side (\(\mathrm{DNSYS}\));

  • the transverse reinforcement density in the \(X\) direction of the element (\(\mathit{DNSXT}\));

  • the equivalent in the \(Y\) sense of the element (\(\mathit{DNSYT}\));

  • total steel volume density (\(\mathit{DNSVOL}\));

  • an indicator of the complexity of implementing the reinforcement (\(\mathit{CONSTRUC}\)).

If TYPE_STRUCTURE = “1D”:

  • a density of longitudinal reinforcement along axis \(Y\) of the section, and in the positive direction of the axis (upper face along the height h) (\(\mathit{AYS}\));

  • a density of longitudinal reinforcement along axis \(Y\) of the section, and in the negative direction of the axis (lower face along the height h) (\(\mathit{AYI}\));

  • a density of longitudinal reinforcement along axis \(Z\) of the section, and in the positive direction of the axis (upper face along width b) (\(\mathit{AZS}\));

  • a density of longitudinal reinforcement along axis \(Z\) of the section, and in the negative direction of the axis (lower face along width b) (\(\mathit{AZI}\));

  • a density of transverse reinforcement (\(\mathit{AST}\));

  • a total longitudinal reinforcement density (\(\mathit{ATOT}\));

  • total steel volume density (\(\mathit{DNSVOL}\));

  • an indicator of the complexity of implementing the reinforcement (\(\mathit{CONSTRUC}\)).

Currently, for “2D” elements, reinforcement densities are calculated using the method of CAPRA and MAURY [R7.04.05]. These densities are expressed in units of area per linear length of shell. For example, if the mesh is in meters (with coherent elementary characteristics and material data), the densities will be expressed in \({m}^{2}/m\) for flexure steels and \({m}^{2}/m\mathrm{²}\) for shear steels.

For the “1D” elements, the densities are expressed in units of area. For example, if the mesh is in meters (with coherent elementary characteristics and material data), the densities will be expressed in \({m}^{2}\) for flexure steels and \({m}^{2}/m\) for shear steels.

The reinforcement field is calculated for all the moments specified by the user (by default: all). If you want to calculate the field containing the « max » values during the transition, you can execute the command:

FERMAX = CREA_CHAMP (OPERATION =” EXTR “, TYPE_CHAM =” ELEM_FER2_R”,

NOM_CHAM =” FERRAILLAGE “, RESULTAT =Solution,

TYPE_MAXI =” MAXI_ABS “, TYPE_RESU =” VALE”,

)