equalDOF : Can I slave multiple joints to one master node?

[fran]

Hi,

Is it appropriate to use the script below in order to equate the "X" displacements of the nodes 21, 22, 23,24 ?

equalDOF 21 22 1;
equalDOF 21 23 1;
equalDOF 21 24 1;

Meanwhile if I do not use semicolon at the end of the command lines, it gives an error. Is it necessary to use a semicolon?

[silvia]

not sure why the ; is giving problems.
but, yes, you can slave the nodes that way.

[fran]

Thank you for your answer.

Regarding the semicolon, when I use the line "equalDOF 21 22 1 # Storey 1" it gives the error below:

WARNING invalid dofID: 1 equalDOF RnodeID? CnodeID? DOF1? DOF2? ...expected inte
ger but got "#"
while executing
"equalDOF 21 22 1 # Storey 1"
(file "n3l6.tcl" line 56)


Since it expects an integer, I changed the line as "equalDOF 21 22 1 1 1 1 1 1 # Storey 1" however recieved the same error.

If I use a semicolon "equalDOF 21 22 1;" all works well.

[silvia]

yes, that should give an error.
in Tcl, just like matlab, you have to separate commands either with a new line or with a ;

[Jhno]

Hi,
is there a way to stipulate more than one slave node?
I have this soil deposit consisting of many column of nodes (528 for the moment)... I guess I could do a for loop and have the command executing over the range of node I wish but I wonder if this options was possible within the command? Thanks!

[nimatehran]

Dear Jhno;

Yes. It's possible.

Nima