Comsol Mechanical Thermal Contact

AI Thread Summary
The discussion revolves around troubleshooting a thermal mechanical contact problem in COMSOL. The user is experiencing errors after computing their model, particularly related to the mechanical contact at the middle part of the structure. They note that the contact worked before adding this part but encountered issues with boundary forces. Despite attempts to fix the middle part, the problem persists, and the user needs it to remain unfixed. Further clarification and diagrams are requested to better understand the issue.
mehdi5165
Messages
2
Reaction score
0
hi,
can somebody pls help me with the model i have appended to this post?
it is a simple thermal mechanical contact problem but i don't know what is wrong about it and why there is some errors in it after computing.
thanks
 

Attachments

Engineering news on Phys.org
Will you explain what do you have to do with the model?
Could you provide some diagram or something where you got the problem from?

As far as I can see you're trying to compute a multiphysics problem here. I can see you are trying to create a temperature difference and then there's also a continuous force load on one of the edges and there are three fixed constraints.

Would you explain further or post a problem statement with the corresponding diagrams.
 
Hi gezibash,
My main problem is about the mechanical contact. it is very problematic on COMSOL.
Here, the middle part has caused the problem. Before adding this part, the contact works (however with a low boundary force).

even fixing the middle part does not solve the problem. (however i need to make it unfixed).thanks
 

Thread '2:1 Pulley Question'

I have Mass A being pulled vertically. I have Mass B on an incline that is pulling Mass A. There is a 2:1 pulley between them. The math I'm using is: FA = MA / 2 = ? t-force MB * SIN(of the incline degree) = ? If MB is greater then FA, it pulls FA up as MB moves down the incline. BUT... If I reverse the 2:1 pulley. Then the math changes to... FA = MA * 2 = ? t-force MB * SIN(of the incline degree) = ? If FA is greater then MB, it pulls MB up the incline as FA moves down. It's confusing...
View full post »

Thread 'Why do all my clocks run slow?'

Hi. I noticed that all electronic devices in my household that also tell time eventually lag behind, except the ones that get synchronized by radio signal or internet. Most of them are battery-powered, except my alarm clock (which runs slow as well). Why does none of them run too fast? Deliberate design (why)? Wrong temperature for quartz crystal? Decreasing battery voltage? Or just a coincidence?
View full post »

Similar threads

Running multiple studies in COMSOL
Replies
2
Views
4K
Help in laser simulation in COMSOL
Replies
8
Views
6K
A geometry question in Comsol (draw a semi-circle tangent to a line)
Replies
3
Views
2K
Acoustics and Fluid Flow - COMSOL 4.2
Replies
2
Views
3K
I "Best" software for emotor simulation?
Replies
2
Views
980
Contact strength in ANSYS Workbench
Replies
2
Views
4K
Someone can help me with Comsol multiphysics?
Replies
1
Views
5K
Engineering Help with a presentation on thermal analysis of an opto-mechanical system
Replies
17
Views
4K
Where Can I Find Simulation Learning Resources for Comsol Multiphysics?
Replies
5
Views
3K
Construction Can a radiant barrier in the attic be effective?
Replies
26
Views
2K

Hot Threads

Recent Insights

Back
Top