Keyword type: step
This option allows concentrated heat fluxes to be applied to any node in the model which is not fixed by a single or multiple point constraint. Optional parameters are OP and AMPLITUDE. OP can take the value NEW or MOD. OP=MOD is default and implies that the concentrated fluxes applied to different nodes are kept over all steps starting from the last perturbation step. Specifying a flux in a node for which a flux was defined in a previous step replaces this value. OP=NEW implies that all previously applied concentrated fluxes are removed. If multiple *CFLUX cards are present in a step this parameter takes effect for the first *CFLUX card only.
The AMPLITUDE parameter allows for the specification of an amplitude by which the flux values are scaled (mainly used for nonlinear static and dynamic calculations). Thus, in that case the values entered on the *CFLUX card are interpreted as reference values to be multiplied with the (time dependent) amplitude value to obtain the actual value. At the end of the step the reference value is replaced by the actual value at that time, for use in subsequent steps.
The use of the *CFLUX card makes sense for heat transfer calculations or coupled thermo-mechanical calculations only. Heat fluxes are applied to degree of freedom 11.
First line:
Following line:
Example: *CFLUX,OP=NEW,AMPLITUDE=A1 10,11,15.
removes all previous concentrated heat fluxes and applies a flux with magnitude 15. and amplitude A1 for degree of freedom 11 (this is the temperature degree of freedom) of node 10.
Example files: oneel20cf.