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[Solved] Cantilever beam, impuls load
Posted 22.02.2011, 08:41 GMT-5 Materials, Structural Mechanics Version 4.1 1 Reply
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I am new to Comsol and want to use it for my master thesis at University of Oslo. In my thesis I'm going to analyze the vibrations of a .22 caliber rifle barrel.
I'm now trying to learn the basics with a cantilever beam.
Cantilever:
Length: 5000 mm
E-modulus: 200 000 N/mm^2 (structural steel)
cross section: 100x100 mm
End load: 1000 N (point load, also used boundary load)
I've done a stationary analysis to solve for stress and displacement which are correct compared to my analytical solution. This gives me approx max disp.: 25 mm at end, and max tensor stress: 30 N/mm^2.
I'm now trying to do a time dependent analysis of my cantilever where I want the load to be an impulse load. My problem is that I don't know how to use my defined function to describe the impulse of my load. I understand how to make a function, but I don't understand how my model can use my function to analyze my problem.
Thanks in advance for any help!
Fredrik
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Hello Fredrik Jacobsen
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I've also completed 2D and 3D stationary studies which match my analytical results, which is nice.
Now I would like to apply the impulse load as a point force at the free beam end, but I do not know how.
Your help would be greatly appreciated!