How to get a displacement vs frequency graph in comsol 5.3?

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Shilong Sun

Which kind of displacement ? is it a point or a whole surface RMS displacement? Can you describe your questions in detail?

Jean Manzano

from my attached mass i just selected a point. Is it considered as a point RMS displacement?

yes, if you define a point value, then you can calculate the dispalcement VS frequency, but first, you have to select the frequency domain study.