Need help with fixing the 1st order analysis error message

Grasshopper Karamba3D
1

Adding Loads.gh (255.8 KB)
Hello, as of now I have modelled my structure and have input the necessary geometry into the right functions (i.e., supports, beams). When analyzing my assembled model, I get the following error message:

  1. There are 30 rigid body modes in the system. This means some parts can move freely without causing deformation.
    Try to use the ‘Eigen Modes’-component and activate the display of local coordinate axes: The first eigen-mode will be the rigid body motion.
    If this does not help, check whether you have a pinned support directly attached to a hinge. A hinge introduces an extra node which may cause the problem.
    When analyzing a flat shell structure one has to lock the rotation perpendicular to the plate in at least one node.

I understand that some parts are not connected, but I can’t find a way to make it fully connected.

2

Hi, your elements in the model are not connected, meaning that the curves are not split at their intersections. The Connected Parts shows you how many different parts of the model are connected together, and this shows that there are 7 groups of curves not connected to each other.

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image1920×732 169 KB

3

Thank you for your reply, is there a way to connect them together? Does the joint function in karamba help with that?

4

You need to use grasshopper to do this - for example CurveCurveIntersection and then Shatter. Karamba has a component to split lines, but if you have curves, this will not work.