thermal analysis
thermal analysis
(OP)
Dear all,
I would like to make a thermal analysis by inputting a tempreature as a load and see the following distribution of stresses. When I create a new step I choose the option to make a coupled temperature-displacement analysis which give the option to choose some heat flux rather then a simple temperature. Should I change element if so which kind of elements I must use in order to apply both a mechanical load and a thermal load.
Thanks in advance,
Albert
I would like to make a thermal analysis by inputting a tempreature as a load and see the following distribution of stresses. When I create a new step I choose the option to make a coupled temperature-displacement analysis which give the option to choose some heat flux rather then a simple temperature. Should I change element if so which kind of elements I must use in order to apply both a mechanical load and a thermal load.
Thanks in advance,
Albert





RE: thermal analysis
corus
RE: thermal analysis
I input the temperature as a predefined field in the initial step and then let propagates in the other steps but is not influencing the analysis. The stress analysi is the same as the temperature is not been inputted. What i am doing wrong?
thanks,
Albert
RE: thermal analysis
I usually run very simple thermal analyses, so I'm not sure if this will solve your problem. But this is what I usually do when investigating effects of thermal expansion:
- insert *Expansion followed by CTE value under the *Material card (you can do this in the gooey (Your Mat Name --> Mechanical --> Expansion --> key in CTE)
- create predefined field named 'temp' and set temp in initial step at 23 (r/t) acting on the desired set(category: other)
- right-click Predefined Fields, choose Manager
- pick the step where the temp changes, click Edit. Then Status: Modified, change magnitude as desired.
Hope this helps,
mizzjoey
RE: thermal analysis
If the loads and displacements you've input for the stress analysis aren't being input or recognised then.. I haven't a clue, sorry.
corus
RE: thermal analysis
RE: thermal analysis
Haven't logged into this site for a long time! Anyway, here's one example. I created a simple, generic rubber oring part installed in a cavity. The first step is installation and the second is the thermal expansion. Note that I created the predefined field in the initial step. If you don't change the temperature in Step-1, you can set the predefined field to start in Step-1, doesn't matter.
Try running it on your pc. This model is pretty generic (I can't emphasize this enough, just in case my colleagues from the legal dept stumble upon this site - phew!) so you need to check on the CTE of the rubber coz I made up the value :)
hope this helps,
jo