Examples for real trends
=============================

For modes_meca modes (real eigenmodes) resulting from a resolution of a generalized problem with eigenvalues :math:`(K-\lambda M)x=0`:


* normalizing an eigenvector :math:`x` to unit generalized stiffness is equivalent to :math:`x` satisfying

:math:`{x}^{T}Kx=1`

Normalization with duplication of the conceptmode_meca:


.. code-block:: text
 mo_2 = NORM_MODE (MODE = mo_1,
NORME = 'RIGI_GENE'
);


* normalizing an eigenvector :math:`x` to the generalized unit mass is equivalent to :math:`x` satisfying

:math:`{x}^{T}Mx=1`

Normalization to the generalized unit mass, with the overriding of the mode_meca concept:


.. code-block:: text
 mo = NORM_MODE (reuse = mo,
MODE = me,
NORME = 'MASS_GENE'
);