plate design 2 end fixed 2 end free

[westheimer1234]

is this in roarks?
if not, where can i find a table for this case.

thanks,

 

[miecz]

Not in Roark. Not in Moody's. Normally treated as a beam with fixed ends. Do you have non-uniform loading?

 

[westheimer1234]

i am designing an end plate of a cantilever beam (8 sided pipe) with biaxial moment..
side ends of the plate are bolted the whole length so i am assuming fixed on side ends and top and bottom end are free..

any suggestion best way to approach this if i dont have finite element software available

 

[hokie66]

I don't understand your description. Any chance of posting a sketch?

 

[westheimer1234]

here you go

 

[westheimer1234]

this is a typical connection of a conductor arm to a pole.. maybe somebody here has sample calcs how to approach this..

thanks,

 

[JoshPlumSE]

I've got a great (but old) reference for this sort of thing:

Moments and Reactions for Rectangular Plates published by the US Department of the Interior Bureau of Reclamation...published circa 1960.

Unfortunately, I pulled out this reference and it has just about every other boundary condition for a 4 sided plate. But, it doesn't have this one.

Two thoughts. 1) Use simple beam theory.... I think that will give you everything you need. If you aren't fully confident then build a quick FEM model to validate that there aren't any unusual 2-way bending effects happening.

 

[westheimer1234]

ooppps i found something but it's kinda old.. but this will do.. anyone has later version please let me know.. thanks,

 

[BAretired]

If you are designing the plate, use yield line theory. It will not provide the elastic stresses or deflections, but it will provide an adequate design.

BA

 

[prex]

In the first site below you can find calculation sheets for your boundary condition, under Plates -> Simple bending -> Rectangular -> 2 clamped,2 free

prex

http://www.xcalcs.com

: Online engineering calculations

http://www.megamag.it

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http://www.levitans.com

: Air bearing pads