4. C modeling#

4.1. Characteristics of modeling#

_images/1000000000000452000003090448FF0A4989223D.png

Charging differs:

  • we remove the constraint imposed in \(Y\mathrm{=}h\),

  • we impose \(p\mathrm{=}–1\) pressure on the lips of the crack.

4.2. Characteristics of the mesh#

Number of knots: 673

Number of meshes and types: 112 QUAD8 meshes and 142 TRIA6 meshes

4.3. Tested sizes and results#

\(G\) values

Identification

Reference

Tolerance

Crowns 1 to 6 \(G\)

\(2.3093{10}^{\mathrm{-}3}\)

\(\text{<1\%}\)

Crowns 1 to 6 \(G\) (IRWIN)

\(2.3093{10}^{\mathrm{-}3}\)

\(\text{<1\%}\)

Crowns 1 to 6 \({K}_{1}\)

\(22.529\)

\(\text{<1\%}\)

Crowns 1 to 6 \({K}_{2}\)

\(0.\)

absolute

4.4. note#

The calculation of \(G\), \({K}_{1}\), \({K}_{2}\) and \(G\) (IRWIN) \(\mathrm{=}\frac{1}{E}({K}_{1}^{2}+{K}_{2}^{2})\) was performed using the same fields \(\theta\) as for the previous modeling. The results are the same.