dampers in transient mechanical simulation with pde toolbox

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Djabba
Djabba 2024-11-4，10:12
Hi all.
I would like to know if pde toolbox is able to help me in the following case.
I want to compute the transient time-response of a mechanical structure experiencing a displament at some of its boundaries.
My structure is composed of a (complex) 3D rigid-body structure, imported from STL file, and 3 identical dampers fixed beneath this structure.
Same boundary condition is applied to the bases of each one of the dampers, and it is a time-varying x translation conditon.
I know characteristics of the dampers in term of resonant frequency and damping coefficient (in 3D), and I would like to modelize them with those parameters. That is, I would like to put in my model 3 'dampers equivalent' instead of 3 'realistic' damper geometries and material properties (that I don't have).
I read in pde toolbox documentation that it is possible to apply 'TranslationalStiffness' load on surfaces or on edges. It looks appealing to me, but I don't really understand the concept of distributed stiffness on surface or edge.
Is it possible to use this 'TranslationalStiffness' on a surface to simulate a 3D damper-equivalent with a given resonant frequency and damping coefficient (in 3D)?
thanks

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