HyperMesh - Create Surface command only creates line

Autumn

Hello,

I am attempting to Geometry > Create > Surface > Square but after defining the normal vector, base node, and size (Y-axis, (0,0,0), 0.010), I only end up creating what appears to be a line, though it is treated as a surface (if I try Geometry > Delete > Surface, I am able to select it as if it were a surface). The bright green line (in the image, shown below) is what appears with just a "wireframe" view and the grey dashed grid lines appear with a "wireframe geometry and surface lines" view. I do not understand why it is showing as simply a line (generally) - I have tried changing all sorts of view/display types and cannot ever see a "solid" square surface. It's worked many times before, so I am confused about what is going on here. Other than HyperMesh allowing me to select it as if it were a surface, I cannot actually 2D mesh it as if it were a surface. I have tried completing deleting the component, creating a new one, and creating the square surface again but still run into this error. I have also tried exiting HyperMesh and re-opening the file, but still, the issue persists.

Has anyone run into this before and perhaps knows of a fix?

Thank you in advance for any advice you may be able to provide.

(If it matters, the User Profile is for Radioss 2021)

Adriano_Koga

Autumn said:

Also, if it is at all related - I am unable to create any lines. Any attempt to create a line after defining the start and end nodes results in the error "Cannot create zero length segment" even though the start and end nodes have differing x/y/z coordinates.

(EDIT - Sometimes creating a new file does not solve the problem) It also seems to be related to the HM file itself, almost as if at some point something occurred that prevents it from creating those geometries correctly because those same commands work fine if I open a new blank file.

this might be related to tolerance settings.

Can you check under preferences, what is the tolerance distance for geometry?

 

If you try to create a geometry smaller than the tolerance, maybe it is collapsing your surface due to this tolerance. Just guessing.

Autumn

Also, if it is at all related - I am unable to create any lines. Any attempt to create a line after defining the start and end nodes results in the error "Cannot create zero length segment" even though the start and end nodes have differing x/y/z coordinates.

(EDIT - Sometimes creating a new file does not solve the problem) It also seems to be related to the HM file itself, almost as if at some point something occurred that prevents it from creating those geometries correctly because those same commands work fine if I open a new blank file.

Adriano_Koga

Autumn said:

Also, if it is at all related - I am unable to create any lines. Any attempt to create a line after defining the start and end nodes results in the error "Cannot create zero length segment" even though the start and end nodes have differing x/y/z coordinates.

(EDIT - Sometimes creating a new file does not solve the problem) It also seems to be related to the HM file itself, almost as if at some point something occurred that prevents it from creating those geometries correctly because those same commands work fine if I open a new blank file.

this might be related to tolerance settings.

Can you check under preferences, what is the tolerance distance for geometry?

 

If you try to create a geometry smaller than the tolerance, maybe it is collapsing your surface due to this tolerance. Just guessing.

Autumn

Adriano A. Koga_21884 said:

this might be related to tolerance settings.

Can you check under preferences, what is the tolerance distance for geometry?

 

If you try to create a geometry smaller than the tolerance, maybe it is collapsing your surface due to this tolerance. Just guessing.

The issue does seem to be tied to the geometry cleanup tolerance - I modified the value slightly and while I can't seem to get it to work for the surface I want, I can get it to display properly and work for a slightly larger surface and will make do with that.

Thank you for your suggestion!