Buoyancy term in SimMechancis

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Arthur
Arthur on 19 Mar 2014
Answered: Steve Miller on 20 Nov 2022
Hey,
I am new to SimMechancis, so the solution is probably very straight-forward...
I am modelling a mooring system for a wave energy converter (e.g. Weptos, check: https://www.youtube.com/watch?v=2_JSZaAgCUw) and so I would need the whole system to be submerged => to have buoyancy.
I don't think that it is possibly to submit the whole system to a buoyancy term (as it is in function of the volume of the members), so I could do it individually for each main item. However, this force needs to stay vertical, which I don't manage to do. So far, the force is always in line with the object... I have left the subsystem "open" from the buoy in the illustration, any idea how it should be done?
Thank you in advance!
Arthur

Answers (1)

Steve Miller
Steve Miller on 20 Nov 2022
The External Force and Torque block has a setting, "Force Resolution Frame". Set it to "World" to always apply the force along the world axes. The buoyancy term would normally be applied along the z-axis.
--Steve

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