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godiffl
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Join Date: Nov 2016
Posts: 2

Normal Forces in a Pressure Vessel

11/01/2016 8:22 AM

Hi,

Hi, I'm trying to find the following forces acting in a pressure vessel; Nx, Ny, Nxy, Mx, My, Mxy. All that I have been provided with is the following:

Gauge Pressure: 6 Bar

Pressure vessel length = 2000mm

Radius = 360mm

Any help would be appreciated, thank you!
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Pathfinder Tags: Forces Pressure pressure vessel stress structural
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

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#1

Re: Normal forces in a pressure vessel

11/01/2016 8:33 AM

Can you define better what you are looking for? Material and thickness would be good to know.

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godiffl
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Join Date: Nov 2016
Posts: 2
#2
In reply to #1

Re: Normal forces in a pressure vessel

11/01/2016 8:51 AM

I'm trying to fine the in plane forces, Nx, Ny, Nxy etc. Haven't been given a thickness or a material.

The data given is the only data i've been provided with, I've tried a variety of formula and manipulation but can't seem to get it right.
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lyn
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Join Date: Oct 2008
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#3

Re: Normal Forces in a Pressure Vessel

11/01/2016 9:25 AM

Maybe here, Pressure Vessel, Thin Wall Hoop and Longitudinal Stresses Equation ...

or there, 3 Thin Walled Pressure Vessels

Sounds like homework to me.
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SolarEagle
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#4

Re: Normal Forces in a Pressure Vessel

11/01/2016 2:34 PM

Could you show us what you have tried? Can you prove you have made any effort whatsoever? This isn't a homework cheat site....

https://www.engr.colostate.edu/~dga/mech325/handouts/pressure_vessels.pdf

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lyn
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#5
In reply to #4

Re: Normal Forces in a Pressure Vessel

11/01/2016 4:35 PM

I like mine better. The print was too small in yours!

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SolarEagle
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#6
In reply to #5

Re: Normal Forces in a Pressure Vessel

11/01/2016 4:52 PM

Ctrl +

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lyn
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#7
In reply to #6

Re: Normal Forces in a Pressure Vessel

11/01/2016 4:54 PM

Too much work.
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SolarEagle
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#8
In reply to #7

Re: Normal Forces in a Pressure Vessel

11/01/2016 9:15 PM

Speaking of lazy,,,I'm getting one of those new wifi t-stats that I can control with my phone....at some point I may never have to get off the couch again....haha

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lyn
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#9
In reply to #8

Re: Normal Forces in a Pressure Vessel

11/02/2016 11:29 AM

Just shoot me and feed me to the hogs if I ever get that lazy.

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MJCronin
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#10

Re: Normal Forces in a Pressure Vessel

11/04/2016 3:32 PM

Most questions about pressure vessels on this forum are concentrated on "how do I specify a pressure vessel?"

Your question is about developing forces and moments used to evaluate stress levels in a vessel .... an intermediate, yet very important step in the design.

Lets assume you have never specified a vessel .....

What is typically done by the purchaser is the following:

- The process engineer provides - design pressures and temperatures, vessel volume and materials of construction.

- The vessel mechanical engineer provides vessel orientation, preferred support arrangement, vessel diameter and length, nozzle details, access platforms etc.

A pressure vessel code (typically ASME or EN) must be embraced.

A purchase spec is developed and quoted by fabricators.

The vessel fabricator will perform detailed code mandated calculations in order to complete the quote. Standard computer based pressure vessel programs are used which can quickly confirm a design.

The best and most qualified fabricator with the lowest price and best delivery is selected and awarded the contract

Where are you in this process ?

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godiffl (1); lyn (4); MJCronin (1); SolarEagle (3); Tornado (1)

Previous in Forum: GE Fr9E Units Combined Cycle Operating with High Back Pressure   Next in Forum: Actuator Piston Thickness Calculation

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