Learning Forum

[RHYLANE]

Hello all, i'm trying to obtain the harmonic response of a beam but i didn't know how to insert the Constant Structural Damping Coefficient to the beam in ANSYS workbench; please guide me ?

Thank you so much.

[Erik Kostson]

Hi

You can do that using say Material Dependent Damping in engineering data for the material used by the beam (say Structural Steel as shown below).

All the best

Erik

[RHYLANE]

thank you so much for you reply, but in Ansys i didn't found a Material dependent damping like in your case, i've found the damping constant coefficient is this the same? Thank you

[Erik Kostson]

Hi

Not sure since this is in French, but I imagine it is the same thing.

All the best

Erik

[RHYLANE]

Thank you so much sir and have you any idea about how to assign the Constant Structural Damping Coefficient to COMBI14 element in ANSYS workbench?

[Erik Kostson]

Hi

The spring or combin14 gets the damping (N*s/m in SI units) via the UI in mechanical (see right image below) and not from a Constant Structural Damping Coefficient in engineering data - in apdl (combin14 element) this comes out in the real constants of the spring combin14 as shown below for the ds.dat file of the workbench mechanical model shown to the right- see the help manual (combin14) for more info. It says also in help that it can have MP,DMPS which is the Constant structural damping coefficient. To define that see last image below:

All the best

Erik

PS: We are closing this discussion, so please use the other post on combin14 for further questions.