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instability of type 1 / 2 ...anybody can help ?

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gemofabird1
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instability of type 1 / 2 ...anybody can help ?

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!

 

 

 

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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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Artur Kosakowski

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