Pinto98
Civil/Environmental
- Apr 4, 2008
- 6
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
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