×
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

Modifying the model data (model size) from an existing input file

Modifying the model data (model size) from an existing input file

Modifying the model data (model size) from an existing input file

(OP)
Hi all,

I have an input file of a simulation run in abaqus. I desperately ,wanted to know how to change the size (dimension) of the model through modifying just the already existing input file rather than using the GUI again for creating a model of different size.

Kindly correct if I am wrong. From the existing input file, the first node values and the last node values gives the overall dimension (size) of the existing model . But, I wanted to change the size of the model and again run the simulation. My existing model has around 1350 nodes.

RE: Modifying the model data (model size) from an existing input file

You did not mention what exactly you want to do. So, let's say you want to "blow up" the model 10 times. Open the INP, import the nodal coordinate definition part in to EXCEL, multiply every coordinate by 10. Do the appropriate formatting again, copy and paste it back in to the INP. The resulting model will be 10 times as big. You may have to refine the mesh (Mesh -> Edit .. ). You could write a quick MATLAB script to do the same so you won't have to worry about it ever again.

On the other hand, you may want to open the .rpy and/or the .jnl file available in the scratch directory and see if you can find the appropriate Python code. If you are familiar with Python scripting, perhaps, you could regenerate the whole model.

http://www.eng-tips.com/faqs.cfm?fid=376
http://www.eng-tips.com/faqs.cfm?fid=1083

RE: Modifying the model data (model size) from an existing input file

(OP)
@IceBreakerSours : Thanks for your reply. I just want to scale down or scale up the model ( say if the size of original model was 100*25*25 dimension and run an analysis with some loading..., I wanted to do for different dimension like 110*30*15 ..., )
I will try what you suggested. If there are some more suggestions for this, kindly post reply.

RE: Modifying the model data (model size) from an existing input file

(OP)
@IceBreakerSours : Could you also give some hints on MATLAB script ...,? it would be useful.

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