Modal Dynamics Amplitude Application

Hi,

Does anybody know what is the default option when you don’t select any amplitudes in Modal Dynamics Setup?

It’s a basic mass-spring system with a spring connected to the ground. And also applied a force on top of the mass.

Amplitude inputs and responses are below.

In the first one, amplitude option is selected to a certain amplitude defined. You can also see the amplitude-time plot on the right. And also response is on the left.

In the second one, no amplitude is selected.

The default amplitude in this analysis procedure is step (load applied immediately and held constant) like in Abaqus.

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