Reference solution
=====================


Calculation method used for the reference solution
--------------------------------------------------------

Not applicable.


Benchmark results
----------------------

Strictly speaking, there is no reference solution but a set of results from the Round Robin participants. These results are obtained by Finite Element calculations with different codes and using very different models: :math:`\mathrm{2D}` (plane stresses, plane deformations), :math:`\mathrm{3D}`, small or large displacements, etc...

However, the numerical values tested in this test case come from a previous execution of Aster. It is a non-regression test case.


Uncertainty about the solution
---------------------------

Not applicable.


Bibliographical references
---------------------------


1. L.H. LARSSON: EGF Numerical Round Robin on EPFM.


2. J.L. CHEISSOUX: "Round Robin" calculation in elastoplastic fracture mechanics - Note DRE/STRE/LMA 82/480 (09/82).


3. Y. WADIER: Application of the Theta method to the study of a CT specimen with three-dimensional elastoplastic rupture. Note EDF HI/5696-07 dated 25/02/87.


4. L.H. LARSSON: "Calculational Round Robin from EPFM: specifications for phase 2". 162/194/19B2 (Ispra, June 1982).


5. M.P. VALETA, M. BUSSON: "Study of the modeling of a CT25" - Report DMT /95-602.