Menu

Discussion Forum

New Discussion
Filtra

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Joule heating and thermal expansion

Posted 15 ott 2015, 06:31 GMT-4 Electromagnetic Heating, Structural Mechanics 1 Reply

Anastasiia Tukmakova
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Met several issues while modeling the spark plasma sintering process using "Joule heating and thermal expansion"
1. Material has a significant deformation (20 mm) on the Von Mises stress 3D plot. But on line graph the value of deformation is normal (0.3 mm). Maybe we interpret stress graph incorrectly? Does this graph include deformation?
2. There is deformation value while the pressure applied but deformation is constant. We have 0% of deformation in case of 0 Pa applied, but any other pressure value leads to constant deformation value of 20 mm in z-axis direction (in case of several Pa or several MPa). So, it looks like deformation on 3D graph is not sensitive to pressure change. Also, as it was in 1., deformation is normal on line graph and there is a change as it is expected.
What can be a reason of such mismatch between 1D and 3D plots?
thanks
1 Reply Last Post 4 dic 2015, 17:01 GMT-5
COMSOL Moderator

Hello Anastasiia Tukmakova

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Jeff Hiller COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 9 years ago 4 dic 2015, 17:01 GMT-5
The deformations in your plots are scaled so you can see those deformations (In most mechanical analyses the deformations are quite small and would not be visible without such a scaling). You can adjust that scaling by going to the Deformation subnode of your plot and changing the scaling factor to 1 (or whatever number you find suitable).
Best,
Jeff
The deformations in your plots are scaled so you can see those deformations (In most mechanical analyses the deformations are quite small and would not be visible without such a scaling). You can adjust that scaling by going to the Deformation subnode of your plot and changing the scaling factor to 1 (or whatever number you find suitable). Best, Jeff

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content