Ansys Learning Forum › Forums › Discuss Simulation › General Mechanical › How can I simulate a vibration force on a steel structure and get nodal accelerations as time series › Reply To: How can I simulate a vibration force on a steel structure and get nodal accelerations as time series
August 7, 2021 at 7:51 pm
peteroznewman
Subscriber
When you say the excitation is in the y axis, is that in the plane of the ground or is that vertical?
Please insert an image into your reply showing the coordinate frame of the model in ANSYS.
Is the y axis of the table the same as the y axis of the model in ANSYS? If not please insert another image showing the coordinate frame of the table.
Since you have a physical structure mounted to a table, the table is being driven by an input signal. The input signal could be a Sine Sweep. That means there is an amplitude A and the frequency sweeps from a low value to a high value. It would be good to know these numbers.
The first thing you should do is run a Modal analysis on your building frame. What is the frequency of the first mode?
Please insert an image into your reply showing the coordinate frame of the model in ANSYS.
Is the y axis of the table the same as the y axis of the model in ANSYS? If not please insert another image showing the coordinate frame of the table.
Since you have a physical structure mounted to a table, the table is being driven by an input signal. The input signal could be a Sine Sweep. That means there is an amplitude A and the frequency sweeps from a low value to a high value. It would be good to know these numbers.
The first thing you should do is run a Modal analysis on your building frame. What is the frequency of the first mode?
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