CR4 - The Engineer's Place for News and Discussion ®


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

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!

Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 19642
Good Answers: 737
#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.

__________________
In vino veritas; in cervisia carmen; in aqua E. coli.
Register to Reply
Participant

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.

Register to Reply
2
Guru

Join Date: Oct 2008
Posts: 39041
Good Answers: 1533
#3

Re: Normal Forces in a Pressure Vessel

11/01/2016 9:25 AM
Register to Reply Good Answer (Score 2)
2
Guru

Join Date: Mar 2007
Location: at the beach in Florida
Posts: 17393
Good Answers: 995
#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

__________________
Life is like riding a bicycle. To keep your balance you must keep moving. A.E.
Register to Reply Good Answer (Score 2)
Guru

Join Date: Oct 2008
Posts: 39041
Good Answers: 1533
#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!

Register to Reply
Guru

Join Date: Mar 2007
Location: at the beach in Florida
Posts: 17393
Good Answers: 995
#6
In reply to #5

Re: Normal Forces in a Pressure Vessel

11/01/2016 4:52 PM

Ctrl +

__________________
Life is like riding a bicycle. To keep your balance you must keep moving. A.E.
Register to Reply
Guru

Join Date: Oct 2008
Posts: 39041
Good Answers: 1533
#7
In reply to #6

Re: Normal Forces in a Pressure Vessel

11/01/2016 4:54 PM

Too much work.

Register to Reply
Guru

Join Date: Mar 2007
Location: at the beach in Florida
Posts: 17393
Good Answers: 995
#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

__________________
Life is like riding a bicycle. To keep your balance you must keep moving. A.E.
Register to Reply
Guru

Join Date: Oct 2008
Posts: 39041
Good Answers: 1533
#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.

Register to Reply
Power-User

Join Date: Oct 2009
Location: Central Midwest
Posts: 389
Good Answers: 31
#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 ?

__________________
We have met the enemy....and he is us. POGO
Register to Reply
Register to Reply 10 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".
Copy to Clipboard

Users who posted comments:

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

Advertisement