Nozzle loads in a flat wall of rectangular tank

[Luike]

Dear Colleagues:

It may seem a bit strange matter I'm talking about but would like to have your cooperation in the field.

I wonder, if possible, a method "analytic" not by FEM to determine the effect of nozzle external loads on the flat wall of a rectangular tank. This tank is full of any liquid with specific density equal to 1.3 (there is not an internal pressure, it is employed as a filter)

My client has given me the maximum loads in each nozzle and I should verify that the wall does not fail. Has anyone experience this?

Your help would be very appreciated

Luike

 

[fegenbush]

I would recommend Pressure Vessel Handbook (any edition within the last 15 years). An Amazon link to the most recent edition

http://www.amazon.com/Pressure-Vessel-Handbook-14th-Engineering/dp/0914458248

The text has a very good section on rectangular tank design. It would be possible to calculate the stresses using this text in conjunction with Roark's.

Regards,

Fegenbush

 

[Luike]

Thanks fegenbush for your promptly answer.

So, I have Megyessey handbook from almost 15 years but their info it is not adequate for to perform this calc. I understand that if I use the method there explained it is limited to a deflexion value lesser than 0.5*thickness.

I only need a method for to demonstrate that if I apply any set of loads in a nozzle, their flat "shell" will not fail due to membrane or/and bending stresses.

Thanks a lot for your advice.

Luike

 

[JStephen]

Does that reference actually have information on nozzle loading in flat plates?

There are several references that cover nozzle loading in cyclinders or spheres.

 

[Luike]

Dear fegenbush:

I have reviewed the contents of the version to which you refer (index) and, apparently does not seem to have changed much, I understand to be a case similar to Moss.

Does anyone know if in the Kanti Mahajan's handbook is developed the matter of flat wall surfaces and nozzle loads on them?. It is unfortunate that my job don't let me learn to use FEM..........

Best regards

Luike

 

[TomBarsh]

As I remember from my class in analysis of plates and shells, most of the classical closed form solutions of determining stress in a flat plate under loads are limited to "small deflections", which is likely the source of the deflection limit given in a previous post. At larger deflections you'll encounter catenary strain and a degree of non-linearity, making the development of closed-form solutions difficult if not impossible.