×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Need help solving coupling temperature and displacement analysis

Need help solving coupling temperature and displacement analysis

Need help solving coupling temperature and displacement analysis

(OP)
I have three parts to model but once I determine the correct method I will be fine with the other two. The design is a simple C-Ring which I have used only half of it as its symmetric. It is in mm and I think I should put it in m just for ease. I have all the material data I could possibly get density, thermal conductivity, plasticity, elasticity & specific heat. I have made my step a coupled temp displacement, initally set time period to 1000, Nlgeom is on. I have made the load a negative surface heat flux on the step mentioned and may have to change it to m as the heat flux is appears to be too small for abaqus. The boundary conditions are fine. However the final boundary condition I have is a temperature BC of 1600 degrees C. This BC is on the step, not sure if it should be on the initial. The mesh is a hex coupled temp displacement. Just wondering if someone could tell me if im going wrong somewhere or whether i should switch to metres insead.

Any help really appreciated. Can send on the part file or screen shots if needs be.

RE: Need help solving coupling temperature and displacement analysis

Hello,
I have used the units - N, m, s, kg - since most of the thermal properties use powers of these quantities.
In order to have displacements in your model you need the coefficient of thermal expansion.

It's not much but hope it helps

RE: Need help solving coupling temperature and displacement analysis

Hi,

Dont know if i really understand the prob. If this is just unexpected results then use SI units as bothul says, thermal coeff as:

Alpha=(change in length)/(original length*change in temp)

Temp in ºC.

anyway I would check it out at first in a simple beam model to be sure.

cheers.

RE: Need help solving coupling temperature and displacement analysis

Dear n3l3,

Since you recommended a simple beam element, I would like to ask you if you know any method to assign a temperature loading to a wire part (section beam)in order to obtain an element(column modeled as wire)which has a linear distributed temperature over the cross-section. Just like the temperature on one side is T1 and on the other side is T2.

Thank you!
Bothul

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources