Create Constrain for an already existing node

SOFiSTiK Teddy
1

I would like to add a constrain to a previously defined SPT.

For example, I create the node “1” and create a link with node “2”:

        SPT NO 1 X 0 Y 0 Z 0
        SPTP TYPE KF REF 2

Later in the script I would like to connect node “1” to node “3”; however, when I call node “1” to create this new link it eliminates the previous ones. Is ther a way to solve this? Obviously, there is an option to define both links when creating node “1”, but that is not the solution that I am after.

        SPT NO -1
        SPTP TYPE KF REF 3
2

Does anybody have a reply to this? :slight_smile:

3

SPT NO 1 X 0 Y 0 Z 0
SPT -2; sptp type kf ref 1
SPT -3; sptp type kf ref 1

4

Hi Mico,

Thanks for your reply, but I think your code does not solve the issue, does it?
With this command “SPT -2; sptp type kf ref 1”, the previously defined constrains at node 2 get deleted.

What I want is to define a new constrain in node 2 without deleting previously defined constrains at this node. The thing is that I would like to create the constrains in two separate blocks: first I define the temporary supports bearings / constrains and then the permanent ones. Since, in some cases, the node for permanent and temporary bearings is the same, I would like to add a constrain to a previously defined node without deleting the already existing ones.

5

You should not (or even cannot) define multiple constrains of the same degrees of freedom for one node.

If you want to try do it in sofimsha after sofimshc:
prog sofimsha
syst rest
node 1 fix kf 3
end