I need some help, I have run block lanczos modal analysis in ansys APDL.It shows that the 'solution is done ' . However, there is no any result listed in result summary. How to overcome this problem?
This type of problem likely arises due to improper support conditions. Check your boundary restrictions. Hope appropriate changes in the same will give the results.
You've provided an extraction range of 0-10 Hz. It could be possible that all your natural frequencies lie outside this range. Also, Ansys provides results as frequencies "f" not circular frequencies "omega", so there is a 2Pi factor involved.
Your structure looks a lot like a plate, so you could use a back-of-the-envelope calculation based on thin plate theory for the first frequency to check your range.
Also, querying for 100 modes using 3D elements could be computationally expensive. You could start by asking for only the first 2 or 3 frequencies and their expansions.
Hi,
The best way is to solve this problem by your own. Just go through tutorials from ansys. In tutorials select modal analysis, this tutorial is very simple to execute and also the case you are studying has been used over there. Good Luck.
As Anup said, it seem to me that your frequency range is too restrictive. expand the range to at least 100 Hz and see, or alternatively, try to increase the range by 10 Hz increments. What are your boundary conditions ?
Why is you mesh so dense ? Do you need that many elements ? If you are doing this as a test run for yourself, you can do it with a tenth of the number of elements, at least as a start, then increase the density after you get results...
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