Discussion Forum

Dear all,

I'm currently working on simulating the frequency response of a resonating membrane and have encountered an issue during the third step, which involves finding the frequency response. So far, I've successfully completed the first two steps: Stationary and Eigenfrequency analysis.

For this step, I've chosen a specific parameter type, characterized by the following values: start = 0.95, stop = 1.05, and nb values = 200. This parameter setup generates a range of values like this: range(0.95, 0.10000000000000009/199, 1.05).

However, I've noticed that the peaks in the frequency response don't align correctly with the eigenfrequencies I expected. For instance, my two eigenfrequencies are 11e6Hz and 23e6Hz, but the observed peaks appear at different frequencies.

Interestingly, I've managed to get the peaks to align correctly by changing the parameter values to start = 0, stop = 1, and nb values = 200. However, this adjustment seems to defeat the purpose of using the initial spread parameter type.

I'm uncertain about what I might be doing wrong in this simulation. Any insights or guidance you could provide would be greatly appreciated. Thank you for your assistance!