#### Topic: Symmetry in pullout model

Hi,

I am trying to model the pullout behavior of a reinforcement bar (as 1-D discrete bar) embedded in UHPC using GiD 11.0.8 as the pre-processor and ATENA 5.6.1i as the FE program. Because of the geometry and load conditions in the experiment, I would like to employ symmetry boundary condition in the simulation. I am going to send the sketch of the specimen as well as the picture of the test set-up to cervenka@cervenka.cz soon after posting this message.

After reading the clause "2.2.12 How can I model a pull-out experiment?" in the ATENA Troubleshooting manual I have the following questions:

1. If the symmetry line runs through the middle longitudinal bars, will it be a problem to assign symmetry boundary condition to the discrete bars (lines)?

2. Since I need to apply symmetry boundary condition to the concrete surface as well, will this condition conflict with the line symmetry condition on the discrete bars?

I have tried to run the model (created according to the clause 2.2.12 in the ATENA Troubleshooting manua) using the above conditions but the execution is aborting right after the first step. Hence, I would like to eliminate the problems causing the early termination of the analysis.

Thank you,

Manish Roy