- [Instructor] This video shows setting up
and running a Transient Response Analysis.
Three levels of damping are used,
and the responses are compared between them.
Now, we're going to open up a SolidWorks file.
The file is plate_1_begin.
If you don't have SolidWorks 2018 or later,
then you can use the para solid file, which is shown here.
Now, we create a new study,
and we're going to change the study type
to Advanced Simulation, Linear dynamic,
and then we choose transient analysis.
We can leave the name as Dynamic 1 and check okay.
I want to set the properties for the analysis,
we want to set six frequencies,
and have the duration of the analysis as .26 seconds.
The time step will be .00039.
Now the background to these calculations
will be given in the following theory videos.
Notice our top, the material property,
to be the usual alloy steel.
We select define shell by selected surfaces.
Click the top surface.
Gonna give this a thickness of .05 of an inch.
Check okay.
Now we create the mesh.
We create the constraints.
That's fixed geometry.
Pick the top edge, and select okay.
Now we create the loading.
It's going to be a pressure load.
Apply it to the top surface
and the value is .01 psi.
We're going to input a curve.
Edit, and I want to have a harmonic loading curve.
Start time is zero,
end time is 10 milliseconds, .01.
Amplitude is unity.
The frequency is 50 hertz.
That gives the sine a pulse, and click okay.
Now, we're going to define the damping.
Edit, define.
We have six modes, and each one of these
is going to be .02 or 2% damping.
Click Okay.
Now, we run the transient analysis.
Again, I've sped up the time line
so it cuts straight to the results.
And I want to define a response graph.
Going to choose the corner node,
and I want to change the result to acceleration
in the vertical sense,
and units in g, and click Okay.
We're going to choose the last peak as the datum point.
The value here is .446g.
Now, we're going to copy this study,
and we're going to just call this Dynamic 2.
Check Okay.
And we're going to edit the damping level.
So, edit, define,
and change this to .04.
Check Okay.
Now, we run the transient again,
and I've accelerated the time line,
so we get to the results quickly.
Now, double click on the response curve,
and again, we're looking for that datum point.
This time, we find 0.257g.
That's down from .446g.
We copy the study again, and just rename
this as Dynamic 3.
Check Okay.
Gonna change the damping again.
This time .06, 6% critical damping.
Check Okay.
Run the study again.
Again, I've accelerated the results.
Now, double click on the response.
Again, we interrogate the response given,
the last peak,
and this time the value is .142g.
So, again, it's down from .257g before.
So, we've applied 2%, 4%, and 6% critical damping,
and we've seen the response go down
from .446, .257, and .142g.
So, now we save the model.
Save As plate_1_end.
And we also want to save the result files.