Complex solids and failure in running the analysis

[mlaur96]

Hi, I was modeling a 4-wall URM building with timber lintels, using 4 nodes tetraedron. I am having issues every time that I try to run the analysis, no matter how I reach my final geometry.



I tried several types of CAD functions, even importing STEP files or doing it from scratch (performing different types of boolean operations). Could you please have a look at it? I am sending the file attached.

For this stage of modeling, please consider that I was planning to model everything as a perfect continuum, even though I am planning to use interface elements when I add the beams (maybe I will have some questions later on ).

Thanks!

All the best,
Laura

[STKO Team]

There were some mistakes:

• The geometry is imprecise: the windows on the left are not exactly on the plane of the wall, creating small faces.
• The solids must be merged together or linked with some interaction, otherwise, the model will be singular
• The assignment is wrong. Materials and Element Properties are assigned to the boundary edges and not to the volumes
• Masses and self-weight in volumForce conditions are wrong according to your unit system

Check this file:

21_11CompoundExploded.zip

(1.46 MiB) Downloaded 221 times

Note:
I performed a gravity load with the self-weight.
Then I used the same self-weight, but in the X direction as horizontal load for the pushover.
Then I monitor the lambda, which in this case will be the load-multiplier

hhh.png (86.96 KiB) Viewed 1741 times