Ansa can quickly set up connections through the Connection function.
Take screw connection as an example here, first display all bolts separately.
use TOPO → Curves → Tubes2Curve Convert bolt geometry to curves.
Keep the curve and delete the bolt geometric surface.
Then use Topo → Points → Edges to convert the curve into 3D points and delete the curve.
The default length unit for Ansa imported step model is mm, and the weight is ton. However, the SI unit we commonly use is m for length and kg for weight. The conversion between the two units is shown in the following table.
| LENGTH | MASS | TIME | FORCE | STRESS | ENERGY | DENSITY | YOUNG’s MUDULUS | Velocity (56.3KPH) | GRAVITY |
|---|---|---|---|---|---|---|---|---|---|
| m | kg | s | N | Pa | Joule | 7.83E+03 | 2.07E+11 | 15.64 | 9.81 |
| mm | ton | s | N | MPa | N-mm | 7.83E-09 | 2.07E+05 | 1.564E+04 | 9.81E+03 |
When defining model parameters, care should be taken to select the corresponding unit system based on the length.
When using Ansa to build surface meshes, we all hope that the round holes can be processed into the form of washer meshes to facilitate adding constraints later.
But the mesh screw holes generated by the default settings don’t seem to be processed by washer.
There are several ways to do this. One is to manually add Zone Cut by geometry processing. This method is too labor intensive and is not recommended.
