How do I decide the frequency range for modal analysis?

RF= solve(model,'FrequencyRange',[1,100]*2*pi);

What are the factors on which this range is dependent on?

Answer 1

[Raghav]

Hi,

After reading your question, I understand that you want to know that how to decide the frequency for modal analysis and which factors depend on deciding that?

The frequency range for modal analysis should be determined based on the specifications of the system you are analyzing, as well as the goals of your analysis. Here are some guidelines to help you decide the frequency range:

1. Operating frequency range: The system’s operating frequency range should be taken into consideration when selecting the frequency range for modal analysis. The modal analysis should cover the entire operating frequency range or at least a significant portion of it.
2. Analysis goals: The goals of the modal analysis will also play a role in determining the frequency range. For example, if the goal is to study the response of the system to high-frequency excitations, then a higher frequency range should be used.

In general, it is recommended to have a wide frequency range that covers the entire operating frequency range. This will ensure that the modal analysis provides a comprehensive representation of the system's behaviour.

The frequency range in the expression [1, 100]*2*pi is specified in units of radians per second (rad/s). The range is dependent on the following factors:

1. The lower limit of the frequency range, 1 rad/s.
2. The upper limit of the frequency range, 100 rad/s.
3. The conversion factor, 2*pi, which is used to convert the frequency range from hertz to rad/s.

The range specified in the expression [1, 100]*2*pi is not dependent on any other specific factors except on mentioned above. It is simply a fixed range specified in rad/s. The solve function, which is called in the expression, is used to find a solution for the model at the specified frequency range.

Regards,

Raghav Bansal