Measure relative deformation

[Pingen]

Hi,

I'm looking at two cylinders, one that runs concentrically inside the other. When I apply a load to the structure, the cylinders move relative each other in their common radial direction (perhaps "radial plane" is a more descriptive way to put it..). Thus, the cylinder's relative placement becomes excentric. I would like to know the magnitude of the relative radial displacement. How do I aquire that information? I have the Professional license, so ANSYS "classic" is probably the best tool for me.

Pingen

 

[cbrn]

Hi,
not necesasrily in Classical. You have to list the radial displacements for the two circumferences and then subtract them at the same tangential (angular) locations. Unless you have exactly the same number of element divisions on the two circumferences (i.e. all the paths connecting the corresponding nodes on the two circles are radial), you will have to write two interpolating functions in order to get the values of radial displacement at any arbitrary tangential (angular) location, and then subtract them. Another and better way to do this is with path-listings (it's natural in Classic, but can be done in WB with Commands snippet), where you define two circular paths with the same divisions (e.g. for one result each 10°, 35 divisions will provide 36 results), map UX (cylindrical CSYS !!!), list, and subtract.
I think this is really the most general method.

Hope this helps,
regards