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


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


.. image:: images/1000060200002F21000016BDA15EAE0ACE5739C8.svg
    :width: 594
    :height: 277


.. _RefImage_1000060200002F21000016BDA15EAE0ACE5739C8.svg:

This modeling containing only 2 elements is insufficiently refined to allow a good representation of the first 6 modes. However, it is retained in this test case for comparison with other codes as indicated in guide VPCS.


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

Number of knots: 3

Number of meshes and types: 2 SEG2 (POU_D_E), 2 POI1 (DIS_T_N)


Modeling parameters
--------------------------

Response on the first 3 modes without static correction (combination of modal responses DPC)

Response on the 6 modes (combination of modal answers DPC, CQC, DSC duration: :math:`5s`)

Response on the first 3 modes with static correction of the 3 neglected modes (combination of modal responses SRSS)

Quadratic combination of directional responses (QUAD).


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

The reference values are the averages of the results of the compared codes, as well as non-regression values for the calculation with static correction.


.. csv-table::

    "**Identification**", "**Reference**
    **VPCS**", "**Tolerance**", "**Reference**"
    **non-regression**", "**Tolerance**"
    "Natural frequencies", "", "", "", "
    "1", "0.24691", "0.01", "", ""
    "2", "0.41666", "0.01", "", ""
    "3", "7.4074", "0.01", "", ""
    "4", "12.5", "0.01", "", ""
    "5", "27.777", "0.01", "", ""
    "6", "41.666", "0.01", "", ""
    "Direction number_mode", "Participation factor", "", "", ""
    "DY 1", "73.3", "0.01", "", ""
    "DZ 2", "73.3", "0.01", "", ""
    "BY 3", "223. ", "0.01", "", ""
    "DZ 4", "-223. ", "0.01", "", ""
    "X 5", "130. ", "0.01", "", ""
    "X6", "195. ", "0.01", "", ""
    "Response on 3 modes (DPC)", "", "", "", ""
    "DEPL B DY", "1.254E-02", "0.02", "", ""
    "B DZ", "2.8E-03", "0.02", "", ""
    "C DY", "1.269", "0.02", "", ""
    "C DZ", "7.574E-01", "0.02", "", ""
    "REAC A X", "0.000", "0.001", "", ""
    "A DY", "1.231E+06", "0.02", "", ""
    "A DZ", "2.7E+04", "0.02", "", ""
    "A DRY ", "2.56E+05", "0.03", "", ""
    "A DRZ ", "5.91E+05", "0.02", "", ""
    "Response on 6 modes (DPC)", "", "", "", ""
    "DEPL B DX", "1.32E-04", "0.02", "", ""
    "B DY", "1.255E-02", "0.02", "", ""
    "B DZ", "3.829E-03", "0.02", "", ""
    "C X", "5.99E-04", "0.02", "", ""
    "C DY", "1.269", "0.02", "", ""
    "C DZ", "7.579E-01", "0.02", "", ""
    "REAC A DX", "4.12E+05", "0.02", "", ""
    "A DY", "1.227E+06", "0.02", "", ""
    "A DZ", "7.96E+05", "0.02", "", ""
    "A DRY ", "4.49E+05", "0.02", "", ""
    "A DRZ ", "5.90E+05", "0.02", "", ""
    "Response (SRSS) on 3 modes with", "static correction", "", "", ""
    "DEPL B DX", "1.76E-04", "1.6", "4.401E-04", "0.001"
    "B DY", "1.267E-02", "0.02", "0.012", "0.001"
    "B DZ", "3.3E-03", "0.5", "4.949E-03", "0.001"
    "C XX", "4.8E-04", "1.6", "1.200E-03", "0.001"
    "C DY", "1.277", "0.02", "1.282", "0.001"
    "C DZ", "0.762", "0.02", "0.767", "0.001"
    "REAC A DX", "5.46E+05", "1.6", "1.375E+06", "0.001"
    "A DY", "12.30E+05", "0.02", "1.241E+06", "0.001"
    "A DZ", "4.90E+05", "1.6", "1.241E+06", "0.001"
    "A DRY ", "3.43E+05", "0.85", "6.337E+05", "0.001"
    "A DRZ ", "5.91E+05", "0.02", "5.969E+05", "0.001"
    "Response on 6 modes (CQC)", "", "", "", ""
    "DEPL B DX", "1.337 10-4", "0.02", "", ""
    "B DY", "1.247 10-2", "0.02", "", ""
    "B DZ", "3.814 10-3", "0.02", "", ""
    "C XX", "6.012E-4", "0.02", "", ""
    "C DY", "1.282", "0.02", "", ""
    "C DZ", "0.767", "0.02", "", ""
    "REAC A DX", "4.18E+5", "0.02", "", ""
    "A DY", "12.40E+5", "0.02", "", ""
    "A DZ", "7.816E+5", "0.02", "", ""
    "A DRY ", "4.481E+5", "0.02", "", ""
    "A DRZ ", "5.969E+5", "0.02", "", ""
    "Response on 6 modes (DSC, duration 5 s)", "", "", "", ""
    "DEPL B DX", "1.339 10-4", "0.02", "", ""
    "B DY", "1.248 10-2", "0.02", "", ""
    "B DZ", "3.816 10-3", "0.02", "", ""
    "C X", "6.09 10-4", "0.02", "", ""
    "C DY", "1.282", "0.02", "", ""
    "C DZ", "7.673 10-1", "0.02", "", ""
    "REAC A DX", "4.183 105", "0.02", "", ""
    "A DY", "1.240 106", "0.02", "", ""
    "A DZ", "7.816 105", "0.02", "", ""
    "A DRY ", "4.483 105", "0.02", "", ""
    "A DRZ ", "5.971 105", "0.02", "", ""



notes
---------


.. csv-table::

    "Spectrum value (interpolation):", "Mode", "Mode", "1", "2", "3", "4", "5", "6"
    "", "Spectrum", "2.972", "5.058", "25. ", "15.74", "10. ", "10."



.. image:: images/Object_2.svg
    :width: 594
    :height: 277


.. _RefImage_Object_2.svg: