example
=====


Modal calculation on matrices with or without Lagrange equations
----------------------------------------------------------------


.. code-block:: text

    K1 = ASSE_MATRICE (NUME_DDL =NU, MATR_ELEM = KEL,)

    M1 = ASSE_MATRICE (NUME_DDL =NU, MATR_ELEM = MEL,)


    # 1. calculation with full matrices:

    #-------------------------------------------------------


    mode1 = CALC_MODES (MATR_RIGI =K1,

    MATR_MASS =M1,

    OPTION =' BANDE ',

    CALC_FREQ =_F (FREQ =( -2, 30),))


    # 2. calculation with matrices reduced by ELIM_LAGR:

    #-------------------------------------------------------


    K2= ELIM_LAGR (MATR_RIGI =K1,)

    M2= ELIM_LAGR (MATR_RIGI =K1, MATR_ASSE =M1)


    mode2 = CALC_MODES (MATR_RIGI =K2,

    MATR_MASS =M2,

    OPTION =' BANDE ',

    CALC_FREQ =_F (FREQ =( -2, 30),))

mode3 = REST_GENE_PHYS (RESU_GENE =mode2)