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ptc-43399821-Visitor
1-Visitor
January 4, 2012
Solved

Shell Problem

  • January 4, 2012
  • 2 replies
  • 3299 views

I have a piece of ducting drawn as below and would like to shell it with 1.5mm thick walls. I would usually use a sheetmetal part however as this is only a quick scheme. Either way the minimum allowed is 2mm, any value below this and the shell fails.

 

If I shorten the left hand section i.e. make the larger volume duct shorter then it will allow me to shell at 1.5mm.

 

Does anyone have a reason for this? I cant imagine that the programme calculates stress/strain etc live to prevent me from drawing too thin a wall at a long length.

Best answer by Patriot_1776

Try setting your model accuracy to "Absolute", and the smallest value you can, then try the shell. Pro/E has issues with "Relative" accuracy when the smallest face is too small relative to the largest face. I've done 2mm shells on far more complicated die-castings.

Good luck!

2 replies

Patriot_1776
Patriot_177622-Sapphire IIAnswer
22-Sapphire II
January 4, 2012

Try setting your model accuracy to "Absolute", and the smallest value you can, then try the shell. Pro/E has issues with "Relative" accuracy when the smallest face is too small relative to the largest face. I've done 2mm shells on far more complicated die-castings.

Good luck!

B
BrianMartin13-Aquamarine
13-Aquamarine
January 6, 2012

Hi Steve...

Did this work for you? I agree with Frank... setting your accuracy to a "finer" value should immediately resolve this issue. It's good to keep this in mind for future modeling, too. This kind of problem crops up ever so often but is easily resolved with an adjustment of the accuracy settings.

Thanks!

-Brian

P
ptc-43399821-VisitorAuthor
1-Visitor
January 6, 2012

Yes Brian the solution worked.

Thanks also Frank.

Patriot_1776
Patriot_177622-Sapphire II
22-Sapphire II
January 6, 2012

Cool, I figured that was it, glad it worked!

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