ABAQUS: MPC Subroutine in input file

[Katha90]

Hi all,

I've written a Multi Point Coinstraint subroutine in Fortran according to the Abaqus User Subroutines Refernce Manual Chapter 1.1.13. I want to include this subroutine in my input file. The input file usage (found in Abaqus Analysis User's Manual Chapter Constraints 28.2.2) is:

*MPC, USER, MODE=NODE

But for the subroutine there are more quantities required as: maxdof, uinit, u, x, jtype, ... How do I tell the subroutine which values are supposed to be used? The node numbers are not enough.

Thanks a lot in advance,

Katharina

 

[akabarten]

Hi,

more quantities required as: maxdof, uinit, u, x, jtype, ...

You do not set them with with Abaqus inputdeck.
You must define A(N) and JDOF(N) in FORTRAN code and all other quantities are setup by Abaqus and you must not write them just read if you need.

See here: Abaqus User Subroutines Reference Manual, 1.1.14 MPC

Regards,
Bartosz

VIM filetype plugin for Abaqus

https://github.com/gradzikb/vim-abaqus

 

[Katha90]

Hi Bartosz,

thanks for your reply.
So my first line in my input file is:
*MPC, USER, MODE=NODE
And are the following lines my nodes
n1, n2, n3, n4
according to the definition in the subroutine, as in x,u,... ? What if the subroutine is used more often than for one node-set? Do I list the other node-sets below or do I have to 'call' *MPC again?

*MPC, USER, MODE=NODE
n1, n2, n3, n4
n1, n2, n3, n5 (if the last node varies?)

Regards,
Katharina