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#67525 - 10/24/16 07:23 PM Flange check as per Sec. VIII Appendix 2
HDSEO Offline
Member

Registered: 02/19/16
Posts: 8
Loc: Seoul, Korea
For effective gasket modulus, in my case, show like below.

High End : 0.
Low End : 0.



What did I mistake?
I want to have a proper value.

Message :
"Enter the modulus of elasticity of the gasket material that occurs during loading and unloading of the gasket. (Several sources have shown this modulus to be somewhat higher than the intitial tightening modulus for spiral wound metal gaskets.)

Typical values used for spiral wound metal gakets :

High End 0.
Low End 0."

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#67530 - 10/25/16 05:46 PM Re: Flange check as per Sec. VIII Appendix 2 [Re: HDSEO]
Richard Ay Offline
Member

Registered: 12/13/99
Posts: 6226
Loc: Houston, Texas, USA
There is a problem in your version of the help file. From the documentation of v.5.31:

Effective Gasket Modulus
Typical values are between 300,000 and 400,000 psi for spiral wound gaskets. The higher the modulus the greater the tendency for the program to predict leakage. Errors on the high side when estimating this value will lead to a more conservative design.
_________________________
Regards,
Richard Ay - Consultant

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#67558 - 10/30/16 06:55 PM Re: Flange check as per Sec. VIII Appendix 2 [Re: HDSEO]
HDSEO Offline
Member

Registered: 02/19/16
Posts: 8
Loc: Seoul, Korea
What about using the valuses from "Gaskets-Deriving the Elastic Modulus -Ray Delaforce Intergraph CAS"?

Do you know this document?

In here, Table G.9-3 shows that the elastic mouduls range from 870226.5 psi to 1450377 psi.

I would like to receive your opinion about this.

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