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Force required to constrain bending
Posted 22 janv. 2014, 14:17 UTC−5 Structural Mechanics Version 4.3b 2 Replies
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Hi, suppose I have a tube fixed at each end. COMSOL can compute the sag of that due to gravity. No problem.
But suppose that sag is constrained - the sagging tube has reached the floor and can sag no more. This has me a bit stumped - because I dont know a priori how much of the tube is going to be lying along the floor. All I know is the max possible displacement.
What I want to determine is the force on the floor (as opposed to the rest of the weight that would be carried by the supports either end of tube).
Any suggestions?
But suppose that sag is constrained - the sagging tube has reached the floor and can sag no more. This has me a bit stumped - because I dont know a priori how much of the tube is going to be lying along the floor. All I know is the max possible displacement.
What I want to determine is the force on the floor (as opposed to the rest of the weight that would be carried by the supports either end of tube).
Any suggestions?
2 Replies Last Post 23 janv. 2014, 16:47 UTC−5
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Posted:
1 decade ago
I tried adding a contact pair, but seems like COMSOL pushes the tube right through it.
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Posted:
1 decade ago
Hi John,
You defined the contact pair but you did not use it. Activate it through Solid Mechanics > Pairs > Contact. When I activated contact the analysis did not converge right away but I hope it gets you one step closer to the solution. You can try applying the load more gradually for example.
Nagi Elabbasi
Veryst Engineering
You defined the contact pair but you did not use it. Activate it through Solid Mechanics > Pairs > Contact. When I activated contact the analysis did not converge right away but I hope it gets you one step closer to the solution. You can try applying the load more gradually for example.
Nagi Elabbasi
Veryst Engineering