Hello, Abaqus users

I'm trying to see stress and heat transfer by heat sources in a cabinet.

Part: Single Structure Domain, Deformable

Property: ABS including density, elastic, plastic, expansion, conductivity and specific heat

Step: Dynamic, Implicit (5 secs)

Field Output Request: basic request + NT and TEMP

Interaction: None

Load: Gravity(downward), Encastre(bottom plate), Heat sources(150, 80, 50 and etc)

I have few questions about the following results.

First 6 pictures shows displacement. 7th picture is NT11, and 8th picture is TEMP

1st pic(0 sec, frame 0), 2nd pic(1.7396E-03 sec, frame 14), 3rd pic(5.5252E-03 sec, frame 16)

4th pic(1.1784E-02 sec, frame 17), 5th pic(9.8398E-02 sec, frame 21), 6th pic(0.2582 sec, frame 22)

then inside thingy keeps falling by 5 secs.

It looks alright by 2nd picture cuz it shows how the heat diffuses away from the heat source

3rd and 4th pics... okay...

From 5th, the red inside which I never designed(it seems like auto-generated fluid domain? idk...), starts to fall along with the gravity direction.

NT11 and TEMP results don't change over time but fall.

S result shows the stress applied to the red inside..and it falls

I wonder 1) what is the red inside, 2) why the thing was automatically made, 3) why this is falling and 4) how I can stop this falling over the cabinet.

and....one more thing!

6) Is Dynamic, Implicit step right to choose to see stress and temperature diffusion by heat sources?

Thank you in advanced,

Je pyo Hong

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