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shell issue

19 REPLIES 19
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Message 1 of 20
Zac-C
1336 Views, 19 Replies

shell issue

I have this part in which i need to Shell 5mm.It keeps giving an error.I could change the design but i would prefer to Shell this part.

Any obvious reasons why it will not Shell.It could be the Loft section causing issue.This is a 2013 part

 

Regards

 

IJC

19 REPLIES 19
Message 2 of 20
JDMather
in reply to: Zac-C

Is there any reason you did this with surfaces rather than strictly solid body?

Workplane1 and 2 are not needed.

Sketch3 is not needed.

 

Would it be OK for your design for the Loft to be tanagent transitioning into the rounds?

 

This image is with a Loft that is tangent where yours is sort of conical sharp transition.

Tangent Loft.PNG

 

Start a new part file and create Sketch1 as shown below. (Note the position of the origin.)

Shell Sketch1.PNG

 

Create Sketch2 as shown below.

 

Shell Sketch2.PNG

 

Sweep the circle in Sketch2, make Sketch1 visible again and Revolve the rectangle.

Shell Features.PNG

 

Loft between the end faces of the Sweep and Revolve (not to sketches) and set the Conditions tab to Tangent on both feature edges.

Tangent Loft for Shell.PNG

 

You can control the Weight of the tangency as needed.

 

Shell the part.PNG

 


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Message 3 of 20
Zac-C
in reply to: JDMather

Thanks JD

 

I do have a solid version of the finished part (no surfaces)...i was just unsure as to why it would not shell so tried with surface,thicken etc..

 

Thanks for the help

 

IJC

Message 4 of 20
CCarreiras
in reply to: Zac-C

Hi!

 

It´s also possible without the tangency (although i agree with it if it is just one complete part).

 

See the video: 

https://screencast.autodesk.com/main/details/3b2c3d71-1ebd-4b3e-bc61-518fb7001595

 

QUESTION:

Why did you doesn't make it with sheet metal, these are several different parts welded, right? Or it's just one part cast iron?
If it is just one part i agree with the tangency, more realistic.
If it are several welded parts, it's more realistic create the parts in sheet metal environment and mount them in one assembly.

 

Did you find this reply helpful ? If so, use the  Mark Solutions!  Accept as Solution or Give Kudos!Kudos - Thank you!



Regards.
CCarreiras
Message 5 of 20
Zac-C
in reply to: Zac-C

It works JD in 2014 but not in 2013

Message 6 of 20
Zac-C
in reply to: CCarreiras

Thanks Carlos...i did use the thicken tool as well originally 1 of the attempts....thanks for the help

Message 7 of 20
WHolzwarth
in reply to: Zac-C

Here's another way of doing (2013 file).

Walter

Walter Holzwarth

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Message 8 of 20
WHolzwarth
in reply to: WHolzwarth

Hmm. This version is more straightforward.

Walter Holzwarth

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Message 9 of 20
amaglim
in reply to: Zac-C

Here there is another possible solution that uss the original geometry.

The idea s to split all the closed faces.

I have used Inventor 2014.

Message 10 of 20
Zac-C
in reply to: amaglim

Hi

 

I tried opening your 2014 file but it will not open...is it a 2015 version part and not a 2014 part?

 

Thanks

Message 11 of 20
amaglim
in reply to: Zac-C

Sorry, I have attached an Inventor 2015 part.

Here is a picture with the solution I have found.

shell issue.ipt..jpg

Marco

Message 12 of 20
WHolzwarth
in reply to: amaglim

Following your way, the solid could be split, shelled, and mirrored as body.

Thus you don't have the split lines.

Walter Holzwarth

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Message 13 of 20
Zac-C
in reply to: WHolzwarth

Is it possible for a 2014 part of your attempt amagliani or Walter do you have a 2014 version of amagliani attempt showing the following..

Following your way, the solid could be split, shelled, and mirrored as body.

Thus you don't have the split lines.

 

Thanks

Message 14 of 20
JDMather
in reply to: Zac-C


@ijc wrote:

 

Following your way, the solid could be split, shelled, and mirrored as body.

 

Thanks


See attached.


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Message 15 of 20
amaglim
in reply to: Zac-C

Hi All,

I have asked a colleague to prepare a 2014 example. I have no idea if you can access screencast, but in case there is a video showing the minimal change to the body to make the shell work.

https://screencast.autodesk.com/Main/Details/3c5ef3e8-3cab-47d7-8f65-94a46007d7f1

I have not found any way to remove the split lines.

My idea was not to section the body in two parts and then to use a mirror, but just to split the face that is creating problems.

 

Message 16 of 20
amaglim
in reply to: amaglim

I have the part created with Inventor 2014.

Message 17 of 20
Zac-C
in reply to: amaglim

Thank you amagliani and JD

Message 18 of 20
johnsonshiue
in reply to: Zac-C

Hi! There is nothing wrong with the way you model the part. The shell failure is not normal. It seems to fail at 4.9994 to 5.0000mm on R2015. Any value outside of the range works fine. The interesting thing is if I recreate the sweep surface, the shell will work on R2015. I will forward this case to development for further investigation.

Thanks!

 



Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer
Message 19 of 20
BenHazard
in reply to: Zac-C

As Johnson has pointed out the shell shouldn't fail and so the ASM team is investigating this issue.

Thanks for bringing this issue to our attention.



Ben Hazard
SQA Engineer
Autodesk ShapeManager
Design, Lifecycle and Simulation
Autodesk, Inc.
Message 20 of 20
Zac-C
in reply to: BenHazard

Thank you

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