I Have a piezoelectric disk of Lithium Niobate with 6.25mm diameter and 0.2mm thickness. I want to find the frequencies at which it has the radial mode of vibration.
In FEM analysis softwares (i.e. Ansys) you could model your disk and do the Modal analysis for the first 10 or 20 modes. After the calculation is done, you could scroll through the modes, where software will display deformed part for each mode. When you find desired mode, you could see its NF.
Emir Nezirić Thank you for your response. I have heard about it first time. Can you please suggest any resource to start with as I am beginner?
Also is there any physical way to measure modes?
Well, some online FEM course could be a good starting point. There is plenty of them on YT.
Actually, BUMP test is usually used to measure natural frequencies of the objects, but I do not think it is suitable for that small scale objects.
But bump test does not guarantee that the radial mode is going to be induced. And also, how to know is the radial mode actually measured? A lot of unknowns.
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