Isolated nodes on supports and instabilities.

[ramonLMG3X]

Hi, I have tried different ways of meshing I found in the forum but I am always getting the same issues with isolated nodes and instabilities. When I try to fix them (with repair mode or without), their appear again.

Note: The building is made of precast panels and floors, hence the numerous amount of linear releases.

Any idea why this is happening? What am I doing wrong?

Link to model https://we.tl/t-M2eod9rT0L

Thanks,

R.

[Stephane.kapetanovic]

hi ramonLMG3X,

There is an irregularity in your model at the junction between the slabs and the walls. The difference is not very big but greater than the automatic tolerance.

The nodes are not on the edge of the slab, which shifts the edge beams. Same, The edges of the walls are not perfectly on the edge of the slab.

This concerns :

Nodes  65 155 245 335 425 515 605 695 785 875 965 1055 1145 1235 1325 1415 1505 1595 1685 1775 1874 1968 2055 2141

Slabs 147 299 448 597 746 895 1044 1193 1342 1491 1640 1789 1938 2087 2236 2385 2534 2683 2832 2981 3143 3291 3425 3559

Edge Beams 121 273 422 571 720 869 1018 1167 1316 1465 1614 1763 1912 2061 2210 2359 2508 2657 2806 2955 3117 3270 3404 3538

Walls 67 220 369 518 667 816 965 1114 1263 1412 1561 1710 1859 2008 2157 2306 2455 2604 2753 2902 3064 3220 3354 3488

Cladding (indirectly) 3996 

Beams and NodesExample at node 2055

Best regards