×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Issues with *MPC SS LINEAR nodes definition

Issues with *MPC SS LINEAR nodes definition

Issues with *MPC SS LINEAR nodes definition

(OP)
Hi everybody,
I've been experiencing some issues in the definition of a *MPC SS LINEAR constraint between shell instance (s-1) nodes and 3D instance (F-1) nodes.
When I am writing in the input file the *MPC, I am exceeding 150 columns (see below) and Abaqus fails to interpret the constraint saying that the *MPC command line is truncated:

*MPC
SS LINEAR,s-1.759,F-1.44,F-1.1373,F-1.1374,F-1.1375,F-1.1376,F-1.1377,F-1.4,F-1.130,F-1.129,F-1.128,F-1.127,F-1.126,F-1.125,F-1.124,F-1.123,F-1.122,F-1.8
SLIDER,F-1.129,F-1.44,F-1.8 

I have tried to wrap the text in different lines (as below) without success:

*MPC
SS LINEAR,s-1.759,F-1.44,F-1.1373,F-1.1374,F-1.1375
F-1.1376,F-1.1377,F-1.4,F-1.130,F-1.129,F-1.128,F-1.127
F-1.126,F-1.125,F-1.124,F-1.123,F-1.122,F-1.8
SLIDER,F-1.129,F-1.44,F-1.8 

Does anybody know if there is a way to deal with large number of nodes in SS LINEAR multipoint constraint definition?
Thank you in advance

Federico

RE: Issues with *MPC SS LINEAR nodes definition

The Keyword Reference Manual explains how to use multiple data lines at *MPC.

RE: Issues with *MPC SS LINEAR nodes definition

(OP)
From the manual:
The first 15 nodes or node sets of an MPC must be entered on the first line. 
If the MPC contains more than 15 nodes, enter 0 on the next line to indicate that it is a continuation 
line and then continue to enter the following nodes on this line. Any number of continuation lines are allowed. 
Exactly 15 nodes or node sets must be given on each line except the last line.
 

Unfortunately adding a 0 at the beginning of the continued line doesn't solve my problem:

*MPC
SS LINEAR,s-1.759,F-1.44,F-1.1373,F-1.1374,F-1.1375,F-1.1376,F-1.1377,F-1.4,F-1.130,F-1.129,F-1.128,F-1.127,F-1.126,F-1.125,F-1.124
0,F-1.123,F-1.122,F-1.8
SLIDER,F-1.129,F-1.44,F-1.8 

Here is the error message:

 ***ERROR: SINGLE NODE 759 INSTANCE S-1 IN MPC IS FOLLOWED BY 1 NODE SETS. THIS 
           IS NOT ALLOWED 

Any guess?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources