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asd23789
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Popular Science - Cosmology - New Member

Join Date: Jun 2011
Posts: 63

PVElite Problem-Cone-External Pressure Thickness

04/12/2012 9:08 AM

Dear All and Moderators,

I am using PVElite 2011 built 13.0.0.0

I am modelling a vessel having a cone at bottom, shell at middle and torispherical dish at the top.

the vessel is under external pressure of 1.0341 bar (Full vacuum)

Large and small end of cone are not considered as lines of support.

only Large end of the cone is provided with a knuckle radius as per ASME section VIII Div:01.

I am providing a stiffener on shell.
Also I am providing a stiffener on cone at the mid length.

When I see the results for external pressur calculation, Pvelite calculates correctly length between 2 stiffeners as the deciding factor for thk calculation for shell and for bottom cone.

After closing the results, when I return to the main screen (Interface), On bottom right corner, where we see required thickness for pressure parts, the values dont match with the results in result file.

Also as per code it is allowed to use stiffeners on cone (Fig:UG-33)

Moderators please help.

Regards
ASD23789

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MJCronin
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Join Date: Oct 2009
Location: Central Midwest
Posts: 455
Good Answers: 38
#1

Re: PVElite Problem-Cone-External Pressure Thickness

04/13/2012 9:40 AM

PVElite is a superb and complex piece of software that was developed in the USA after the investment of millions of dollars or research money and many, many years of hard work.

Currently, many more pressure vessels are being designed and fabricated in India than ever before. In the USA, this industry is in decline and many people cannot find jobs. These are the same people who developed this superb tool.

Banu, it is always difficult getting technical assistance and guidance on software that is stolen. This type of question you posed is usually answered directly by the vendors because he wishes to help his paying customers....

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jackchen
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Join Date: Nov 2010
Posts: 39
#2

Re: PVElite Problem-Cone-External Pressure Thickness

04/15/2012 8:36 PM

Spam: This post was deleted because it contained advertising outside the Commercial Space forum. Please review Section 14 of the CR4 Site FAQ about advertising.
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pritam
Guru
Engineering Fields - Mechanical Engineering - New Member India - Member - New Member

Join Date: Aug 2008
Location: City of destiny, INDIA
Posts: 775
Good Answers: 67
#3

Re: PVElite Problem-Cone-External Pressure Thickness

04/16/2012 12:38 AM

"vessel is under external pressure of 1.0341 bar (Full vacuum)"

Is the outside the vessel is at atmospheric pressure? If yes, then for full vacuum external pressuressure will be 1.01325 bar only.
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Malcolm Stephen
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Join Date: Mar 2009
Location: Sydney, Australia.
Posts: 126
Good Answers: 11
#4
In reply to #3

Re: PVElite Problem-Cone-External Pressure Thickness

04/22/2012 10:03 PM

"1.01325 bar only" (at sea level). Maybe a typo or not at sea level.
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