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shell issuses

4 REPLIES 4
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Message 1 of 5
moseydroop
533 Views, 4 Replies

shell issuses

moseydroop
Explorer
Explorer

Hello i am having a serious issues with shelling. every time i go to shell a object, fusion freezes up so that i have to close it and start over, i also have that issue when i go to edit a shell. PLEASE help!....

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shell issuses

Hello i am having a serious issues with shelling. every time i go to shell a object, fusion freezes up so that i have to close it and start over, i also have that issue when i go to edit a shell. PLEASE help!....

4 REPLIES 4
Message 2 of 5
jeff_strater
in reply to: moseydroop

jeff_strater
Community Manager
Community Manager

@moseydroop, please share your model here.  Remember that Shell is a very complex operation, and if the model is large and/or complex, it can take a LONG time to compute.  It could be that the operation will succeed if you let it go long enough.  But, if you share the design, we can take a look at it and tell you what to expect.

 


Jeff Strater
Engineering Director
0 Likes

@moseydroop, please share your model here.  Remember that Shell is a very complex operation, and if the model is large and/or complex, it can take a LONG time to compute.  It could be that the operation will succeed if you let it go long enough.  But, if you share the design, we can take a look at it and tell you what to expect.

 


Jeff Strater
Engineering Director
Message 3 of 5
moseydroop
in reply to: jeff_strater

moseydroop
Explorer
Explorer

Here is the file. i am trying to shell it to .08 on the flat side.

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Here is the file. i am trying to shell it to .08 on the flat side.

Message 4 of 5
jeff_strater
in reply to: moseydroop

jeff_strater
Community Manager
Community Manager
Accepted solution

A couple of things I noticed in this model:

 

first, do you really want to shell the rails/legs of this thing?  One thing you can do is split those off into a separate body, do the shell, then add them back in later.  But, in this case, I think the real problem is the geometry on the domed end.  If you turn on a curvature analysis map, you can see that the middle of that face has extremely high curvature:

 

Screen Shot 2018-08-21 at 3.20.38 PM.png

 

This will absolutely cause shell problems.  Areas of high curvature will produce self-intersecting offset faces, which will cause the shell to fail.  Even more important, though, is that there is some bad geometry inside your model.  If you do a section view, you can see that there is a tiny hollow right at the end of that domed face:

 

Screen Shot 2018-08-21 at 3.36.59 PM.png

 

You can repair this by going into the Patch workspace, deleting these end faces, and the stray faces, and re-creating the domed face (first creating a sketch point at the dome top), stitching it all back together:

 

 

 

 


Jeff Strater
Engineering Director
0 Likes

A couple of things I noticed in this model:

 

first, do you really want to shell the rails/legs of this thing?  One thing you can do is split those off into a separate body, do the shell, then add them back in later.  But, in this case, I think the real problem is the geometry on the domed end.  If you turn on a curvature analysis map, you can see that the middle of that face has extremely high curvature:

 

Screen Shot 2018-08-21 at 3.20.38 PM.png

 

This will absolutely cause shell problems.  Areas of high curvature will produce self-intersecting offset faces, which will cause the shell to fail.  Even more important, though, is that there is some bad geometry inside your model.  If you do a section view, you can see that there is a tiny hollow right at the end of that domed face:

 

Screen Shot 2018-08-21 at 3.36.59 PM.png

 

You can repair this by going into the Patch workspace, deleting these end faces, and the stray faces, and re-creating the domed face (first creating a sketch point at the dome top), stitching it all back together:

 

 

 

 


Jeff Strater
Engineering Director
Message 5 of 5
moseydroop
in reply to: jeff_strater

moseydroop
Explorer
Explorer

ok thanks a lot.

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ok thanks a lot.

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