Learning Forum

[Hussam]

Hello Everyone,

I am trying to model a bridge in Workbench static structural mode. The bridge is made of Reinforced concrete. I believe I assigned the appropriate materials and commands to connect the steel and concrete together. However when I run my analysis the rebar seems to only be connected at the 2 end nodes as shown in the picture below.

I would greatly appreciate the help!

[Hussam]

Post addition
Attached are the commands I used
/PREP7
ESEL,S,ENAME,,187
ESEL,A,ENAME,,180
ALLSEL,BELOW,ELEM
CEINTF,0.001 ALLSEL,ALL
/SOLU
OUTRES,ALL,ALL

[Erik Kostson]

No commands are needed anymore for concrete modelling.

This is the recommended workflow for RC structure:
Good luck

Erik

[Hussam]

Hi Erik,

Thank you for your reply.
Using the reinforcement option works great however I want to apply a modal analysis on my bridge which doesn't work with reinforcement.
Are there any alternatives?

Hussam

[Erik Kostson]

Reinforcement works with modal also - see below (same model as in link, but modal this time using reinf. on line bodies - of course we can only use linear concrete and steel properties, so only Young's modulus and Density should only be defined in eng. data, since modal analysis is a linear analysis). Also turn material nonlinear effects off (see last image) for all parts in order to avoid the error if you are using nonlinear materials in engineering data.

[Aelnagg3]

Hi I am trying to model a beam using the method you have, but it gives me non-convergence everytime. it wont even run (stays at 1% everytime then tells me error in element formulation and material solution failed). Any idea on how to fix this? I am using ANSYS 2020 R2

[Hussam]

I made sure my materials have linear effects only and turned off non linear effects but again when running the modal analysis I am getting the error below. I am not sure what I am doing wrong.

[Erik Kostson]

As you see from the images posted above in previous post we used the latest release 2021 R2 - then it worked as shown above. You are using an older release - so you would need to download the latest student version.

Thank you

Erik