Circular pattern in assembly, STENT
Circular pattern in assembly, STENT
(OP)
Hi, I'm pretty new to using Abaqus. For a school project I'm learning how to analyze a stent for medical application.
I created the part in Solidworks and imported as either .igs or .stp files into Abaqus. I meshed the part and created assembly using circular pattern. At this point, I have a circular stent, and the entire stent is meshed (dependent mesh from part ).
After a few other steps, such as create contact and specify load, I ran the job. The job was aborted because it seems like the parts created from the circular pattern are not merged, see picture.
I went back to the assembly and tried using the merge tool to connect the joints.
1. At first the parts were created from .igs files. I wasn't able to merge both geometry and mesh. when merging geometry alone I got an error saying cannot merge due to virtual topography.
2. I recreated the part from .stp file. The part imported as shell, then I created the solid from the shell. when merging geometry in the assembly, it simply says the merge was unsuccessful.
3. It allows me to merge the mesh only. But if I merge the mesh, there is no longer association with the geometry, I wasn't able to apply interaction or load to the mesh assembly.
Questions:
1. when creating a circular pattern, how do I connect the parts into one solid?
Thank you1
I created the part in Solidworks and imported as either .igs or .stp files into Abaqus. I meshed the part and created assembly using circular pattern. At this point, I have a circular stent, and the entire stent is meshed (dependent mesh from part ).
After a few other steps, such as create contact and specify load, I ran the job. The job was aborted because it seems like the parts created from the circular pattern are not merged, see picture.
I went back to the assembly and tried using the merge tool to connect the joints.
1. At first the parts were created from .igs files. I wasn't able to merge both geometry and mesh. when merging geometry alone I got an error saying cannot merge due to virtual topography.
2. I recreated the part from .stp file. The part imported as shell, then I created the solid from the shell. when merging geometry in the assembly, it simply says the merge was unsuccessful.
3. It allows me to merge the mesh only. But if I merge the mesh, there is no longer association with the geometry, I wasn't able to apply interaction or load to the mesh assembly.
Questions:
1. when creating a circular pattern, how do I connect the parts into one solid?
Thank you1





RE: Circular pattern in assembly, STENT
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RE: Circular pattern in assembly, STENT
If so, you can draw and mesh your part in a planar configuration which should make meshing the part a bit easier. Then you can wrap the part around the longitudinal axis using *NMAP. You will lose the connectivity between the geometry and the mesh but you don't need it to define BCs/loads/interactions.
RE: Circular pattern in assembly, STENT
@IceBreakerSours: Do you mean that both the geometry and the mesh need to be merged, to main the association of mesh to geometry?
@Dave442: The other option I was thinking of is to just model part of the stent.
Thanks!
RE: Circular pattern in assembly, STENT
By the way, this forum has a policy against student postings. Read the FAQs.
*********************************************************
Are you new to this forum? If so, please read these FAQs:
http://www.eng-tips.com/faqs.cfm?fid=376
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