4. Operands#
4.1. Operand MATR_MASS#
♦ MATR_MASS = m
Name of the concept assembled matrix corresponding to the mass matrix of the system.
4.2. Operand MATR_RIGI#
♦ MATR_RIGI = k
Name of the concept assembled matrix corresponding to the stiffness matrix of the system.
4.3. Operand MATR_NORME#
♦ MATR_NORME = g
Name of the concept generalized assembled matrix corresponding to the positive definite symmetric matrix serving as the norm of errors in observation space.
4.4. Operand MATR_PROJECTION#
♦ MATR_PROJECTION = h
Name of the projection matrix used to make the geometric correspondence between the mesh associated with the mass and stiffness matrices on the one hand, and the mesh associated with the \(\widehat{u}\) observations on the other hand.
The projection matrix h must be the result of a calculation with the operator PROJ_CHAMP [U4.72.05] with the method “COLLOCATION”.
4.5. Operand MESURE#
♦ MESURE = me
The name of the mode_meca or dyna_harmo concept containing the fields that will be used as an observation. This concept should contain as many order numbers as the number of frequencies that will be studied when the operator is called (operands FREQ/LIST_FREQ).
Moreover, the fields contained in me should not have Lagrange-type degrees of freedom.
The dimension of the fields contained in this concept must be consistent with the dimension of the standard matrix g entered under the operand MATR_NORME.
Using the OBSERVATION [U4.90.03] operator may be an appropriate way to condition a mode_meca or dyna_harmo concept as an me measure.
4.6. Operand CHAMP_MESURE#
◊ FIELD_MEASURE = | “DEEP”, [DEFAULT]
Choice of fields determining the type of field contained in the me measure.
4.7. Operands FREQ/LIST_FREQ#
◊/FREQ = lf
List of all calculation frequencies: (f1, f2,…, fn).
/LIST_FREQ = cf
Name of the listr8 type concept containing the list of calculation frequencies.
4.8. Operand CHAM_MATER#
◊ CHAM_MATER = chmat
The name of the material field. Might be useful for some post-treatments.
4.9. Operand CARA_ELEM#
◊ CARA_ELEM = character
Name of the characteristics of the elements of beams, shells, etc., required for certain post-treatments.
4.10. Operand ALPHA#
♦ ALPHA = al,
Value of the weighting parameter of the functional comparable to the term of regularization.
4.11. Operand GAMMA#
♦ GAMMA = go away,
Value of the functional error weighting parameter \((u-v)\) and \((u-w)\).
4.12. Operand EVAL_FONC#
◊ EVAL_FONC = | “YES”, [DEFAULT]
Choice determining whether the value of the functional for the optimal field triplet will be evaluated and stored in the result.
If yes, the operator will store the calculated values under the dedicated parameter “ERC_EVAL_FONC”.
The storage of the value of “ERC_EVAL_FONC” is done as follows in the outgoing mode_meca concept:
For the th-calculation frequency, two values of “ERC_EVAL_FONC” are stored:
in the (2 (i-1) +1) th num_order of the outgoing concept we store the value of \({e}_{{\omega }_{i}}^{2}(u,v,w)\)
in the (2 (i-1) +2) th order number of the outgoing concept we store the value associated with the term of the following error fields \((u-v)\) and \((u-w)\):
\(\frac{\gamma }{2}{(u-v)}^{T}[K](u-v)+\frac{1-\gamma }{2}{(u-w)}^{T}{\omega }^{2}[M](u-w)\)
4.13. Operands SOLVEUR#
◊ SOLVEUR
This factor keyword is optional. It allows you to define the system’s resolution method. The syntax is described in document [U4.50.01].
In the current release, the solvers available are MUMPS (default) and LDLT.
4.14. Operand TITRE#
◊ TITRE = tx
Title attached to the concept produced by this operator [U4.03.01].