Examples of use
======================

Here are two examples of how to use DYNA_ISS_VARI. The first example shows a response spectral density calculation. The second example shows an oscillator response spectrum calculation.

The user must have previously done a Pro MISS3D calculation (CALC_MISS [:external:ref:`U7.03.12 <U7.03.12>`] with TYPE_RESU =' FICHIER ').


Example 1
---------

An example of a command set for calculating the response spectral density taking into account the spatial variability of the incident seismic movement is presented here.


.. code-block:: text

    RESU = DYNA_ISS_VARI (

    FREQ_INIT =fmin,

    NB_FREQ = NF,

    PAS = df,

    NOM_CMP = 'DX',

    PRECISION = 0.999,

    INTERF =_F (

    GROUP_NO_INTERF =' RADIER ',

    MODE_INTERF =' CORP_RIGI ',),

    MATR_COHE = _F (

    VITE_ONDE = 600. ,

    PARA_ALPHA =0.5,),

    UNITE_RESU_IMPE = 32,

    UNITE_RESU_FORC = 33,

    MATR_GENE = _F (

    MATR_MASS = MASSGEN,

    MATR_RIGI = RIGIGEN,


    MATR_AMOR = AMORT,

    ),

    INFO =2,);

You can also consult test case SDLS118A for an implementation of the method.

The response spectral density can be recovered in physical coordinates using the REST_SPEC_PHYS operator.


.. code-block:: text

    SPVX = REST_SPEC_PHYS (MODE_MECA = BAMO,

    TOUT_ORDRE = 'OUI',

    INTE_SPEC_GENE = RESU,

    NOM_CHAM =' DEPL ',

    NOEUD =( 'N77'),

    NOM_CMP =( 'DX',),

    OPTION =' TOUT_TOUT ');

The transfer function is obtained for unitary seismic excitation and by plotting the root of the values of the auto-spectrum.


Example 2
----------

An example of a command set for calculating the response spectral density taking into account the spatial variability of the incident seismic movement is presented here.


.. code-block:: text

    RESU = DYNA_ISS_VARI (

    EXCIT_SOL = _F (ACCE_X = ACCE_X),

    FREQ_MAX =50.0, FREQ_PAS = 0.5,

    PRECISION = 0.99,

    INTERF =_F (

    GROUP_NO_INTERF =' RADIER ',

    MODE_INTERF =' CORP_RIGI ',),

    MATR_COHE = _F (

    VITE_ONDE = 600. ,

    PARA_ALPHA =0.5,),

    UNITE_RESU_IMPE = 32,

    UNITE_RESU_FORC = 33,

    MATR_GENE = _F (

    MATR_MASS = MASSGEN,

    MATR_RIGI = RIGIGEN,


    MATR_AMOR = AMORT,

    ),

    INFO =2,);

test_1= RECU_FONCTION (RESU_GENE =test_1_a,

    NOM_CHAM =' ACCE ',

    NOM_CMP ='DX',

    NOEUD =( 'N11'),

    INTERPOL =' LIN ',

    TITRE =' ACCELERATION TO CENTRE BAS OF RADIER ',);


    SROX1 = CALC_FONCTION (SPEC_OSCI =_F (FONCTION =test_1,

    NORME =9.81, AMOR_REDUIT =0.05,),);

You can also consult test case SDLS118B for an implementation of the method.