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#73319 - 05/24/19 04:33 AM Stress Result CAESARII vs Autodesk Inventor
JR Park Offline
Member

Registered: 03/03/08
Posts: 29
Loc: KL, Malaysia
To All,

I was performing a comparison check of the results from CAESAR II and Autodesk Inventor. But results are different. I changed the Yield Stress Criterion from the configuration editor but still results are different.

BTW, my piping is a straight pipe, anchored on both ends.

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#73320 - 05/24/19 05:43 AM Re: Stress Result CAESARII vs Autodesk Inventor [Re: JR Park]
anubis512 Offline
Member

Registered: 08/24/18
Posts: 79
Loc: USA
Are the assumed anchor stiffness values the same? Same piping code/load cases?

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#73321 - 05/24/19 08:20 AM Re: Stress Result CAESARII vs Autodesk Inventor [Re: JR Park]
Faizal K Offline
Member

Registered: 07/21/08
Posts: 158
Loc: USA/Malaysia
Yes, this is the case where the anchor stiffness makes a significant difference. Even if you don't manually define the stiffness in CAESAR II input, specifying rigid ANC or any rigid restraint would use CAESAR II default stiffness. See configuration editor>computational control>input spreadsheet defaults.

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#73326 - 05/28/19 05:46 AM Re: Stress Result CAESARII vs Autodesk Inventor [Re: JR Park]
engineer001ch Offline
Member

Registered: 12/21/18
Posts: 17
Loc: China
This is a very simple model.
Compare elastic modulus value at hot temperature and thermal expansion factor, pressure.
Check equations https://www.whatispiping.com/restrained-and-unrestrained1


Edited by engineer001ch (05/28/19 05:48 AM)

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