CONTact code with NURB

[Schandra]

Dear all,

I am working on contact problem between two cylinders in NURBFEAP(84).
For a simple case I am unable to acheive contact, I get a segmentation error.
I am sharing the file with you, it would be great if you can give me insights on it.

Regards,
Chandra

[Prof. R.L. Taylor]

Unfortunately, once you no longer use the block commands you cannot specify contact surfaces the way you did, feap does not know what a surface type is.  You will have to define the surfaces as elements (facets) that feap can understand.

In future, you should look at the output file (Oxxxxx) file to make sure you have good data.  You can also check that there are contact surfaces using the PLOT PAIR command.

[Schandra]

Thanks for the clarification Prof. Taylor. I defined it as per the earlier version and it was working well. I shall try to debug the difference.

[Schandra]

Dear Prof. Taylor,

I am working on a stent geometry which has multiple master patches enforcing contact on a slave cylinder.
Is there an elegant way of selecting the correct facet number for each individual patch of stent that should come in contact with inner surface of cylinder.
If I have to develop a code, can you please suggest me an approach to start with.

Warm Regards,
Chandra