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Healing Surfaces with Cleanup command

Hello,

 

I often use the Solid Cleanup command with Advanced... (modifying the Heal tolerance to the necessary value and OK) to create Solid from Surfaces (command Stitch many times fail to create correct Solid geometry). I noticed in Femap v11.2, that after using this command (Advanced Cleanup), the Surfaces of the new Solid doesn't match to the original. It didn't worked that way in earlier versions Femap.

 

Before Cleanup:

 

 

After Cleanup:

 

 

I attached the model with Surfaces (before using command Cleanup).

 

Best Regards

 

Peter

2 REPLIES

Re: Healing Surfaces with Cleanup command

Dear Peter,

I never click in ADVANCED buttom, simply activate the four options of command "GEOMETRY > SOLID > CleanUP" and you are done:

 

 

You will get the following:


Solid Cleanup
5 Solid(s) Selected...
Solid 1 passes Geometry Checking
Solid 2 passes Geometry Checking
Solid 3 passes Geometry Checking
Solid 4 passes Geometry Checking
Solid 5 passes Geometry Checking

 

The geometry you provide is not a solid, but a colection of surfaces. Simply take a look to the MODEL INFO tree under GEOMETRY and you will see the surfaces (or use command MODIFY > COLOR > SOLID > ALL and select a color > RANDOM)

 

 

In order to create a solid you need to use command GEOMETRY > SOLID > STITCH > SELECT ALL > and use a tolerance stitching of say 1E-4, and you are done, the result will be a valid & genuine 3-D solid, OK?.

Best regards,

Blas.

 

 

Blas Molero Hidalgo, Ingeniero Industrial, Director
IBERISA • 48004 BILBAO (SPAIN)
WEB: http://www.iberisa.com
Blog Femap-NX Nastran: http://iberisa.wordpress.com/

Re: Healing Surfaces with Cleanup command

Dear Blas,

 

the command Cleanup with Advanced was the best command to create Solid from Surfaces. The command Stitch many times fail to create Solid, but with Cleanup with Advanced button I could make almost always a good Solid.

 

Please do the followings:

 

Geometry > Solid > Cleanup (Select Surfaces 1 to 5)

Click to button Advanced...

(sometimes you need to change the Heal Surfaces tolerance, but this times default value is OK)

Click OK

 

In the Message Window appear:

 

Solid Cleanup
5 Solid(s) Selected...
Cleaning with Simplification...
Small Feature Removal...
Edge Healing...
Healed 1 edges.
Cleaning with Simplification...
Small Feature Removal...
Edge Healing...
Healed 1 edges.
Cleaning with Simplification...
Small Feature Removal...
Edge Healing...
Cleaning with Simplification...
Small Feature Removal...
Edge Healing...
Cleaning with Simplification...
Small Feature Removal...
Edge Healing...
Surface Healing and Stitching...
Stitched into 1 bodies.

 

And created new Solid 6:

 

 

 

I often simulate weld this metod from surfaces of the related components. After using command Cleanup with advanced button I check geometry with command Mesh Size on Solid. When appear window for mesh sizing surfaces, to geometry OK, when appear window for mesh sizing surfaces, to I must change the tolerance (or I have a hole somewhere).

 

Best regards

 

Peter