user subroutine

[barney75]

Hi guys,
I want to write a simple subroutine that gets the coordinates of a node (i.e. 10600, see attached file) and, at the moment, writes them in a text file. Generally I start with simple exercise for understanding how to use, in this case, the function GETVRN. My question is, as far as I understand, for using the GETVRN function, I have to use it inside the function UMESHMOTION in order to get the parameter JGVBLOCK, so at the of the day my "simple" -)) subroutine should be as the one I've attached in this thread. One more problem is that in my input I need to use also the MPC user subroutine so the question is how is possible to use both of the subroutine at the same time?

Thanks

Bye

 

[barney75]

Hi,
as regards the second issue I got around it simply putting in the same file .for the two subroutine and calling this file in the command line when submitting the analysis. As regards the first issue I realise that I can retrive nodal coordinates also with the function DISP but at the end of my exercise I'd like to impose a concentrated load during a step to a single point as a fucntion of it's spatial coordinates. Is it possible? I found out the user subroutine for applying distributed loads (taht is DLOAD) but anything for concentrated load....

Any suggestion?

tahnks

bye