There are several tips to modeling X-Bracing within RISA-3D that can help the model solve faster and give you better results.

When it comes to trusses in RISA-3D, boundary condition definitions (pin vs. roller) can make a huge difference. Let’s take an example of a typical roof truss.

If you have ever tried to solve a two-dimensional model in RISA-3D, you have ultimately run into instabilities in your model because your model has no out of plane restraint. To quickly lock your model out of plane, RISA-3D offers the ALL command in the Boundary Conditions spreadsheet.

Do you get an instabilities warning when you’re trying to do a simple 2D model in RISA-3D?