F modeling: method SIMPLEXE
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Characteristics of modeling
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An auxiliary grid is not used. We're going to test option TORE. The radius of the cylinder (:math:`4\mathrm{mm}`) coincides with that of the torus.


Characteristics of the mesh
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The same mesh as that of modeling A. is used.


Tested sizes and results
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We test that the maximum and minimum values of the difference field are equal to zero.

**The option** TORE **therefore correctly calculates the group of nodes that belong to the given radius torus built around the bottom of the crack.**