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

This solution [:ref:`bib4 <bib4>`] is the one obtained with the SAMCEF [:ref:`bib1 <bib1>`] software. The modeling is based on a shell theory in resultant efforts with a co-rotational formulation [:ref:`bib3 <bib3>`] and a discretization DSQ [:ref:`bib2 <bib2>`].


.. image:: images/100007FC000069BB00002F70F3B7DD3F6641FCBF.svg
    :width: 246
    :height: 110


.. _RefImage_100007FC000069BB00002F70F3B7DD3F6641FCBF.svg:

The mesh considered is :math:`20\mathrm{\times }4` quadrilateral elements with 4 nodes each.


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


1. SAMCEF, V7.1 Volume Elements Reference Manual,1998


2. J-L. BATOZ, G. DHATT: "Modeling Structures by Finite Elements: Beams and Plates", Hermès, Paris, 1992


3. M.A. CRISFIELD: "Non-linear Finite Element Analysis of Solids and Structures", Volume 1: Essentials, John Wiley, Chichester, 1994


4. Ph. JETTEUR: Nonlinear Shell Kinematics. Report SAMTECH, Contract PP/GC-134/96, 1998