Modeling A
==============


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

This cyclic repeatable structure is studied using the CRAIG - BAMPTON cyclic dynamic substructuring method.

A base sector, constituted by an angular sector of 60°, is meshed in hexahedra.

The modal base used for the sector is composed of 15 specific modes and **constrained modes** associated with interfaces.


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

Number of knots: 77.

Number of meshes and types: 30 meshes HEXA8


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

For each node at the end of the axis, only the calculated relative displacement is given, the reference value must, in all cases, be zero.


.. csv-table::

    "**Number**
    **order**", "**Node 1**", "**Node 2**", "**Node 2**", "**Node 3**", "**Node 4**", "**Node 5**", "**Node 6**"
    "2", "0.0", "0.0", "0.0", "0.0", "0.0", "0.0", "0.0"
    "3", "4.08292E-07", "4.41513E-06", "4.00684E-06", "4.08292E-07", "4.41513E-06", "4.41513E-06", "4.00684E-06"
    "4", "4.08304E-07", "4.41514E-06", "4.00684E-06", "4.08304E-07", "4.41514E-06", "4.41514E-06", "4.00684E-06"