Vibrational Modes: How They Affect Motion

[Kajan thana]

TL;DR

I understand the basic meaning of vibrational mode. Could someone interpret what this graph means?

Ps: It is not a homework hence why I did not leave it under that headline.

 

[berkeman]

What is the test setup? Is this accelerometer data?

 

[Kajan thana]

This data is on Bimorph beam (PEH)...

 

[berkeman]

This data is on Bimorph beam (PEH)...

Oh, like this: https://www.google.com/url?sa=t&rct.../8/4/645/pdf&usg=AOvVaw2DBGVt6_5h1-fJ0Yv-EqoI

Summary:: I understand the basic meaning of vibrational mode. Could someone interpret what this graph means?

So the "Predicted" graph was likely plotted using FEA tools, and the "Measured" graph was plotted directly from the acquired data. Presumably they were exciting the MEMS arm with a high mechanical impedance source and sweeping the frequency of that source to get the plot. Similar to how you plot the transfer function of a 2-port network...

 

[Kajan thana]

Thank you so much