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Comsol Beam Displacement Solution Very Off
Posted 18.09.2019, 13:30 GMT-4 Structural & Acoustics, Results & Visualization Version 5.3a 2 Replies
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To verify my comsol results, I evaluated a round solid aluminum beam with the following specifications and load case:
beam diameter: 28mm beam length: 300mm
Physics: The beam is extruded in the z-direction Fixed Constraint: on the bottom face (3) Boundary Load: on the top face (4) of 1000N
Running a Stationary Study, I receive the following outputs: Volume Maximum Total Displacement (mm): 0.2741
I have verified this result against Fusion 360's NASTRAN solver and the analytical solution, both of which give me the following result: Total Deflection: 4.32mm
Am I overlooking something or is COMSOL outputting very wrong values?
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Hi,
you entered a radius of 28 mm in the Comsol model. With 14 mm you get 4.33 mm displacement.
Cheers Edgar
-------------------Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
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That was a poor oversight on my part. Thank you so much for pointing this out.