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Embedded elements

Embedded elements

Embedded elements

(OP)
Dear all,

I need to model a composite column out of concrete and steel reinforcement exposed to fire. Therefore I have to perform a thermal analysis. To model the reinforcement (both longitudinal reinforcement and stirrups) I wanted to use embedded elements to benefit from comparatively low computational costs. The concrete is modeled by damaged concrete plasticity.

However, I encountered the following statements concerning embedded elements in the ABAQUS documentation:

- "embedded elements can be used in coupled temperature-displacement analysis but does not contribute to the thermal conductivity and specific heat"
- they "cannot be used in heat transfer or mass diffusion analysis"

Therefore I like to ask you if there is a way to attribute time-dependent temperatures to the reinforcement, perhaps by using a user subroutine. Or do you know a better way to model the fire-exposed composite column?

Many thanks in advance!

Pinto
 

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