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groups not available for BC's

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14 years 2 months ago #4094 by Dave
Replied by Dave on topic Re:groups not available for BC's
perhaps i can use a plane definition that is small enough to only be around my targeted face? wonder if the plane partition will only apply to the plane's original size definition rather than an infinite plane.
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14 years 2 months ago #4096 by Claus
Replied by Claus on topic Re:groups not available for BC's
Dave wrote:

thanks again claus. this is very helpful.

there must be something strange going on since i cannot select 3D mesh on my resulting partition object, i am only allowed 1D mesh by the popup menu. the part is definitely a solid and i am only using a plane to partition it. i am selecting edges as the resulting structure since i only want edges added to my solid. i imagine this is my problem.

actually, it looks like i am able to create a 3D mesh on a partition if i use the 2nd partitioning method. what are the differences between those 2 methods.

also i have a question about partitioning a face on a solid. i am only interested in getting 2 lines on a face but not cutting the entire solid as that would lead to very poor element structure once meshed. i have partitioned a defined face "group" but that results in a new partition that is definitely not a solid. so is it possible to add edges to just one of the faces of the solid and still get out a solid with all subsequent partitioning entities available for mesh groups?

thanks again.


Im still not sure what the first partition method is so I can't really comment on that :side: but I can tell you that the behaviour of the mesher is quite normal when you only select an edge to be meshed => 1D mesh.

You've answered your own question regarding partitioning a small area of a solid; the plane (or whatever) you use to partition with, only partitions the area it intersects with, thus you can create a plane from points on the solid etc. or a predetermined size and then translate and rotate it into place before partitioning. The results can sometimes be.. interesting though :)

Code_Aster release : STA11.4 on OpenSUSE 12.3 64 bits - EDF/Intel version
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14 years 2 months ago #4098 by Dave
Replied by Dave on topic Re:groups not available for BC's
by first method, i mean the first (left most) radio button.

thanks again
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14 years 2 months ago #4099 by Dave
Replied by Dave on topic Re:groups not available for BC's
is there no partition by extruding method? if you only wanted to partition a face of a solid, what would be your preferred method? the plane method isn't real clean because it does cut into the body some, just curious if there is another easy method i am missing.
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