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Torque load
Posted Jan 6, 2012, 6:30 a.m. EST 3 Replies
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Hi,
I am trying to apply a torque load of 100 cNm to a simple shaft. I have done this by making a cylinder and applying point forces to the four edge points at one end and fixing the other end.
But my question is: Is there not a simpler way by which you can just fix one end and apply the torque to the other? (I know that the rigid connector can apply a displacement angle but not a torque) It seems like something that the software could cope with easily but I cant find it anywhere.
Thanks in advance,
Chris
I am trying to apply a torque load of 100 cNm to a simple shaft. I have done this by making a cylinder and applying point forces to the four edge points at one end and fixing the other end.
But my question is: Is there not a simpler way by which you can just fix one end and apply the torque to the other? (I know that the rigid connector can apply a displacement angle but not a torque) It seems like something that the software could cope with easily but I cant find it anywhere.
Thanks in advance,
Chris
3 Replies Last Post Jan 9, 2012, 5:57 a.m. EST
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Posted:
1 decade ago
Hi
Certainly yes. Point forces makes singularities. There was a good example in the "solid" manual of 3.5a, I have also left an example on the model exchange (for 3.5a). And you can find several references on the Forum, try a search.
In V4 you might apply the same 3.5a described method (with an ODE) but you can also use the "Rigid Connector", with the limitation that you are making the boundary of the rigid connector fully stiff, this might have some collateral effects on your model, check carefully the doc.
I have heard that a "Soft Connector " is under preparation, looking forward for that ;)
--
Good luck
Ivar
Certainly yes. Point forces makes singularities. There was a good example in the "solid" manual of 3.5a, I have also left an example on the model exchange (for 3.5a). And you can find several references on the Forum, try a search.
In V4 you might apply the same 3.5a described method (with an ODE) but you can also use the "Rigid Connector", with the limitation that you are making the boundary of the rigid connector fully stiff, this might have some collateral effects on your model, check carefully the doc.
I have heard that a "Soft Connector " is under preparation, looking forward for that ;)
--
Good luck
Ivar
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Posted:
1 decade ago
Thanks for your response Ivar.
I have been looking at the 3.5 structural mechanics example but again, it seems an awfully long winded method for what is simply:
Fix at one end.
Torsion at other.
This probably isnt helped by my lack of experience with v3.5 but theres definitely nothing more straight forward?
Regards,
Chris
I have been looking at the 3.5 structural mechanics example but again, it seems an awfully long winded method for what is simply:
Fix at one end.
Torsion at other.
This probably isnt helped by my lack of experience with v3.5 but theres definitely nothing more straight forward?
Regards,
Chris
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Posted:
1 decade ago
Hi
if you are in 3.5a that is the "cleanest", but adding a tangential force along en edge works too (better than 4 point forces)
--
Good luck
Ivar
if you are in 3.5a that is the "cleanest", but adding a tangential force along en edge works too (better than 4 point forces)
--
Good luck
Ivar