March 19, 2010

How to Model a Two-Dimensional Component in RISA-3D

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. Type All in the Joint Label cell and Reaction in the Z direction cell.  This will restrain all joints in your model from any translation in the Z direction.

This command will add a boundary condition to every joint for the translation or rotation that you specify. You will not see these boundary conditions graphically, but solving will show the instabilities are gone.

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This entry was posted by RISA News on Friday, March 19th, 2010 at 9:00 am and is filed under Technical Solutions. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

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