4. B modeling#
4.1. Characteristics of modeling#
There are 3 crowns defined for order CALC_G (with \(h=\mathrm{0,625}\mathit{mm}\)):
Crown 1: |
\(\mathit{Rinf}=2h\) |
|
Crown 2: |
\(\mathit{Rinf}=h\) |
|
Crown 3: |
\(\mathit{Rinf}=3h\) |
|
The crack bottom is defined by DEFI_FOND_FISS, and for each crown we perform: a classical \(G\) calculation (option G of CALC_G).
4.2. Characteristics of the mesh#
Number of knots: 2679
Number of meshes and types: 644 TRIA6 meshes and 424 QUAD8 meshes
4.3. Test values and B modeling results#
The values tested are those of \(G\) obtained by the classical method and those of \({G}_{\mathrm{IRWIN}}\) obtained by the formula d’IRWIN from the stress intensity coefficients:
Identification |
Reference \((J\mathrm{.}{m}^{-2})\) |
Tolerance |
Crown 1 \(G\) |
572.05 |
|
Crown 2 \(G\) |
572.05 |
|
Crown 3 \(G\) |
572.05 |
|