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Fully Coupled Thermal Stress Analysis

Lumped heat capacitance matrix and temperature oscillation.



When I was reading the Abaqus manual about transient analysis in thermal field, I found a sentence that says 'In transient analyses using first-order elements the heat capacity terms are lumped, which eliminates such oscillations....' (Transient analysis in Abaqus Analysis User's Guide 6.5.3). 

I think that this 'oscillations' is related to not only explicit time integration, but also implicit time integration (such as Backward Euler method).

Thermo-mechanical analysis ( Heat transfer due to radiation and convection)

I know you place tremendous value on your time so I’ll be brief.
I am trying to do a thermo-mechanical analysis of a closed region (H=75cm). In this region, at the bottom, the Temperature is around 700 degree. A structural beam is placed at the height of 25 cm from the bottom surface in closed region.
I want to simulate the heat transfer from the bottom surface to beam due to convection (because air is there as a medium in closed region) and radiation.

Thermal Analysis of a Coated Component

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Could anyone share some idea on how to model a Surface Coating. I am using Abaqus Standard for the thermal analysis. For the coating, i tried to create a 'Skin' on the surface and assigned a Homogenous Shell section for the Skin. Is this correct? I couldn't see much difference in the results. Or is there any better way to model a surface coating?


ABAQUS Fully-coupled Thermal Analysis / ABAQUS Explicit

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Hi everyone,


I am new to ABAQUS. I am working on a research topic where I need to study the temperature increase arised due to strains applied to a body. From the user's manual I understood that I need to use "Sequentially Coupled Thermal-Stress Analysis" for my model.

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