asdeasoft.net

Dear STKO team
I am a beginner in STKO,recently I watched some videos about it to learn STKO and then tried to build a model,but I am having some difficulties in meshing or analyzing it,which prevents me from running the analysis. The error prompted is as shown in the picture, then I tried to re-mesh several times but the problem is still not solved, today I saw this on YouTube again, maybe my element properties are assigned incorrectly but after I checked the model I still can't figure out what the error is. I would appreciate it if you can help me to check my model and tell me what the problems are and how to fix！

Regards

1. The element is a brick (for hexa mesh) but the mesh is a quadratic (second-order) tetra. Use a linear tetra and the 4Nodetethrahedron opensees's element
2. The interactions used to attach a node to the face of a solid (the first 3 interactions) should be of type node-to-node, and the condition should be beamSolidCoupling
3. Rebars should be connected to the solid with a node-to-element interactions with and embedded condition
4. The numberer in the analysis steps should be the parallel one
5. The rebars should have the same mesh size (or smaller) than the solid in which they are embedded. Now I removed the edge seeds and I used a uniform global mesh size
6. There were some rebars without a physical property
7. The concrete ep is too large (0.02), did you mean 0.002?
8. The time series for the loadPattern of a Displacement Control Analysis MUST be Linear! The path time series instead is used to imposed the displacement cycle

STKO Team wrote: ↑

Fri Oct 13, 2023 9:05 am

1. The element is a brick (for hexa mesh) but the mesh is a quadratic (second-order) tetra. Use a linear tetra and the 4Nodetethrahedron opensees's element
2. The interactions used to attach a node to the face of a solid (the first 3 interactions) should be of type node-to-node, and the condition should be beamSolidCoupling
3. Rebars should be connected to the solid with a node-to-element interactions with and embedded condition
4. The numberer in the analysis steps should be the parallel one
5. The rebars should have the same mesh size (or smaller) than the solid in which they are embedded. Now I removed the edge seeds and I used a uniform global mesh size
6. There were some rebars without a physical property
7. The concrete ep is too large (0.02), did you mean 0.002?
8. The time series for the loadPattern of a Displacement Control Analysis MUST be Linear! The path time series instead is used to imposed the displacement cycle

pier.zip

I am very grateful to you for pointing out so many mistakes and giving me suggestions, which will be of great help to my future research work. Thank you again for your serious answer！

You're welcome