After calculating a transient respons through mode-superposition and expanding the results, it appears ansys only expands 800 time steps. At a samplerate of approx 1000 samples per second, this is less than a second worth of transient respons.
Is this the maximum and/or is there a way to...
I'm happy to report that I've got it working.
It appears I didn't read the manual close enough and the replies here made me do it better. It turned out I needed to expand the results, which I thought I did, but did at the wrong point. I expanded the results before the modesuperposition...
Hi,
Thanks for the replies.
I'm getting more and more familiar with all the issues. Maybe it's just not possible?
I can review the time-history of the superposition modes in Post26, per node. Ansys can draw a graph there where the displacement is plotted against the time.
It's also possible...
Thank you for your reply.
I've found this function you mention. I've expanded the first five modes. But when issuing the command, Ansys asks for a mode number to be issued with the set command?.
It would be helpfull if there was an example of how to do this. I tried searching the verification...
Coupling is a easy to use way of the coupling you want. CP is indeed the command to use.
It is accessable through the GUI via Preprocessor>Coupling/Ceqn.
Extra tip: Look in the helpfile for the CP-command. At the top-right you can see the GUI path. This is true for all commands.
HTH
Hi,
I'm performing some modal analysis. I use the mode superposition method. I can retrieve the results for a single node, but I want to watch the deformed shape over time. The model is damped, so it should vibrate a bit before comming to a standstill.
How is this to be achieved in Ansys?
It want to calculated the natural frequency of a single beam and varying the relevant parameters (in all combinations)
this is the code snippet in which I vary 6 parameters. However it seems to only loop through the first five, and not the sixth...
Hi,
I need to nest a couple of do-loops to vary multiple parameters. It seems only 5 do-loops can be nested and I need to vary 6 parameters.
Is this correct? Are there other (better) ways of varying parameters?
Thanx in advance
Drej,
Thanx for your answer. Though it didn't prove to be giving the correct geometry it put me on the track of checking the DOF. I use COMBIN14 with KEYOPT(2)=6, which results in a spring with only the ROTZ DOF. It also requires the nodes to be at the same coordinates.
Because it only has the...
Probably bad english ;)
I'll try and describe it.
At the beam ends I want to restrict in a certain amount the free rotation, so when the beam-end rotates, a moment, proportional to the rotation is created.
Hi,
I want to model a beam and find it's natural frequency. At the end of the beam I want to add a rotational spring. Therefore I define a double node at the same coordinates and use Combin 14 (Also tried combin7). I used the D command on the node that only connects to the Combin element and...
Hi,
I started with Ansys recently and did the structural tutorial. I followed it to the letter, but I can't get the nodal stresses to be plotted.
When I open General Postprocessing->Plot Results-> Contour plots-> Nodal Solu the list that appears only list Nodal -> Contact
Any ideas where it...
