Number of elements in mesh partition

[slbibb58]

Hello,

In order to run a simulation using OpenSees MP, I partitioned the mesh. However, the number of elements displayed in the partitions is incorrect. For example, in the attached mesh, I have a total of 100 elements, but STKO shows two partitions with 75 elements each, resulting in a total of 150 elements.

partition_100elements.png (57.45 KiB) Viewed 2604 times

[kesavapraba]

Hi, I would like to know if the model includes any embedded bars or multi-point constraints. If so, STKO will generate extra elements in addition to the solid meshes, which means there could be more elements than what is visible in the model.

[STKO Team]

When you mesh a model, STKO generate all mesh element for all geometries, but not all of them go to OpenSees (only those with an ElementProperty).

As an example:

• In your CAE you have a Face geometry (it has 4 edges and 1 face as sub-geometries)
• When you mesh (assume divisions = 1) it STKO will tell you there are 5 elements (1 face + 4 edges)
• If you assign an ElementProprty only to the sub-face, then OpenSees will have only 1 Element
• If you also assign an ElementProperty to the boundary Elements ( truss or beams for example) then OpenSees will have all 5 elements
• BUT, during the meshing STKO doesn't know which element will be converted to OpenSees, so it will show all of them

If you want more detailed results about the Mesh Info, you can use the Query tool in the Geometry toolbar