- #1
skaboy607
- 108
- 0
Hi
I am using Ansys to find the natural frequency of a structure but this has meant that my understanding of vibrations has become unstuck.
When I last studied natural frequencies, it was under free vibration. I formed the impression that one structure can have only one natural frequency which would correspond with a mode shape.
However, in Ansys, for a continuous structure, you can find an infinite number of mode shapes (default of 6).
So my question is, how can a structure have so many natural frequencies and therefore corresponding mode shapes.
Confused me!
Any help much appreciated!
I am using Ansys to find the natural frequency of a structure but this has meant that my understanding of vibrations has become unstuck.
When I last studied natural frequencies, it was under free vibration. I formed the impression that one structure can have only one natural frequency which would correspond with a mode shape.
However, in Ansys, for a continuous structure, you can find an infinite number of mode shapes (default of 6).
So my question is, how can a structure have so many natural frequencies and therefore corresponding mode shapes.
Confused me!
Any help much appreciated!