Generalities
===========

These two commands create char_cine_* (_meca/_ther) concepts.

The AFFE_CHAR_CINE command can also create char_cine_acou concepts.

These types are different from the load type created by the AFFE_CHAR_MECA [U4.44.01], AFFE_CHAR_THER [U4.44.02], or AFFE_CHAR_ACOU [U4.44.04]) commands.

The objects created are therefore not interchangeable.

The advantage of "kinematic" loads is that they do not increase the number of system unknowns to be solved, unlike the method of dualization by multipliers in LAGRANGE, used in commands that produce a load-like concept.

On the other hand, the use of these charges has the following limitations:


* they can only be used in the case of an "imposed ddl" relationship (and not for linear relationships),


* these charges are not yet accepted in all global orders. Today the possible orders are:


    * MECA_STATIQUE, STAT_NON_LINE, DYNA_NON_LINE


    * THER_LINEAIRE


* for a calculation that does not use global commands: assembling a matrix, then solving, the sequence of commands to use is more complicated than with "ordinary" loads as can be seen in example 2 [:ref:`§ 5.2 <§ 5.2>`].