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Hi I am getting instability Type 1 and 2's in a bridge design for my Honours Project at a range of different nodes when trying to run the calculations. How do you fix this issue? File attached. Any help would be greatly appreciated!
1. The structure type should be 3D frame rather than 3D truss (Geometer > structure type)
2. Bars have to connect to each other Mind that you work with dimensionless sticks rather than real solid shapes
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