E modeling
==============


.. _RefNumPara__7865_786461998:


Characteristics of modeling
-----------------------------------

The loading considered here is a variable loading along the crack lips. Variable pressure is imposed on the lips of the crack:

:math:`p\mathrm{=}\frac{x\mathrm{-}100}{\mathrm{37,5}}`.

In a second resolution, an equivalent contouring force is also imposed on the lips. Theoretically, the results are the same.


Characteristics of the mesh
----------------------------

Modeling mesh C.


Tested sizes and results
------------------------------

:math:`G` values from CALC_G, option G.

Values of :math:`{G}_{\mathit{IRWIN}}`, :math:`{K}_{1}`, and :math:`{K}_{2}` from CALC_G, option K.

We test these values for the 2 loads mentioned in § :ref:`5.1 <RefNumPara__7865_786461998>`.


.. csv-table::

    "**Identification**", "**Reference**", "**Tolerance**"
    "Crowns 1 to 6 :math:`G` "," :math:`\mathrm{6,0}{10}^{\mathrm{-}4}` "," :math:`\text{<0,5\%}`"
    "Crowns 1 to 6 :math:`G` (IRWIN)", ":math:`\mathrm{6,0}{10}^{\mathrm{-}4}` "," :math:`\text{<0,55\%}`"
    "Crowns 1 to 6 :math:`{K}_{1}` "," :math:`\mathrm{10,95}` "," :math:`\text{<0,5\%}`"
    "Crowns 1 to 6 :math:`{K}_{2}` "," :math:`0.` ", "absolute"