Benchmark solution
=====================


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

The calculation method used to simulate the behavior in the contact zone is presented in detail in references [:ref:`bib1 <bib1>`] and [:ref:`bib2 <bib2>`].


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


.. image:: images/Object_3.svg
    :width: 589
    :height: 436


.. _RefImage_Object_3.svg:


Uncertainties about the solution
----------------------------

The uncertainties associated with this reference are less than 5% (reading the graphical results).


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


1. P. CHABRAND, F. DUBOIS, J.C. GELIN: "Modelling drawbeads in sheet metal forming", Int. J. Mechanics, vol. 38 no. 1 pp 99-77 (1996)


2. R. WAGONER, E. NAKAMACHI and J.K. LEE: A benchmark test for sheet metal forming analysis. Technical RePT. No. ERC/NSM -S-90-22, Ohio State University (1988)