Recent content by AlanSYH_

Which log file exactly? I tried looking around but had no luck, there are so many log files & I got lost looking at them… sorry I’m relatively new with Abaqus.

Hello all, I have designed a concrete beam for 3 Point bending test. The material in all 4 simulations are the same. BCs are also the same, with a downward displacement of the roller by 0.42mm. Optimization settings are also the same with objective of minimizing strain energy, I only varied the...

Yeah I know, I’m looking to troubleshoot it. The only thing that I changed was the volume fraction from 30% to 50%. I don’t get why it’s giving this error or why.

Sorry if it is confusing, I meant that I changed the volume fraction constraint to 50% and it gave the error mentioned above. Then I tried to change the max member thickness to 20mm from the original 30mm & I got the same error.

Hello guys! I was playing around the TO parameters and I got this result using these parameters. Parameters: Objective Minimize SE, constraint <=30% volume fract. & max member thickness 30mm With the same setup, I changed the VF constraint to 50% and Max Member Thickness on two separate...

Thank you guys for the response, sorry for the very late reply, I wasn’t aware that there were replies. I just have an additional question, I was playing around the the TO parameters and I noticed that my TO tasks kept aborting stating that ‘success check string was not found in the solver...

Hey! Thanks for the response. 3. You are absolutely right! In fact, I’m comparing the time taken to print the formwork for this concrete beam & subsequently compare the strength/weight ratio of the beam compared to the others. 4) I have tried, currently I am using mesh size 5. But when I kept...

Hey, great point there with the reinforced concrete! I’ve modelled this concrete beam as isotropic because I have tried adding the concrete damaged plasticity properties into the material & the stress analysis works fine but I kept getting aborted TO tasks & I couldnt decipher what is causing...

Hi all, I have designed a 3 point bending test of a concrete beam and did topology optimization on it. Attached below is the result, I am generally satisfied with it but I have been trying to smoothen the sharp edges and introduce a symmetry about the middle (Left half design = Right half...

Hello, Yes, it is a discrete rigid part. I will try the analytical rigid part instead. Thank you for the direction!

So how would you find the optimal size for the mesh then? I'm just confused what to do from here

Hey, thanks for the response. I will look into it. But what explains the different stress patterns on the concrete beam itself?

Hello all, I followed a youtube video & made a 3 point bending test simulation for my concrete beam. Was trying to find the optimal number of mesh to use so I tried a few simulations with different mesh size & got different stress patterns and more stress concentration at contact point instead...