Bending stress on circular disc
Bending stress on circular disc
(OP)
Guys
I borrowed the attachment from the web but I have a similar problem. I am trying to cal the bending stress of a circular disc but it is sort of different from the generic beam formula we use.
I wonder whether we can still apply
Bending stress = MY/I
Thanks for all the help
I borrowed the attachment from the web but I have a similar problem. I am trying to cal the bending stress of a circular disc but it is sort of different from the generic beam formula we use.
I wonder whether we can still apply
Bending stress = MY/I
Thanks for all the help





RE: Bending stress on circular disc
RE: Bending stress on circular disc
"I borrowed the attachment from the web but I have a similar problem." ... wtf ??
"I am trying to cal the bending stress of a circular disc ..." ... you have a flat plate (ok, a round plate = disc) loaded transversely ?? My/I works for thick plates. thin plates are very different (membrane reactions).
Roark, mentioned above, is a good place to start.
RE: Bending stress on circular disc
Sorry for the confusion. I have a circular plate welded to a tube. I wanted to calculate the bending and shear stress so that I can see whether the weld is strong enough for my application.
I have attached a pic of my problem and it will be great if someone can point me to the formula
RE: Bending stress on circular disc
If you really need a solution/help I suggest you give the following info:
Pipe OD:
Pipe ID:
Flange OD:
Flange ID:
Flange Thickness: Given (Thanks)
The 20kg load, is it a Uniformly Distributed Load (UDL) around the Flange or Several (How many?) 20kg Point loads equidistant around the flange?
RE: Bending stress on circular disc
RE: Bending stress on circular disc
Tata
RE: Bending stress on circular disc
tg
RE: Bending stress on circular disc
On the other hand, if you need to abuse yourself for no reason, then as mentioned, Roarks has the closed form solution set for this exact geometry.
You must have a million miles of pipe as added weight to be bummed out about a 20 kg load, brother. Otherwise there are better solutions than circular plate deflection.
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada
RE: Bending stress on circular disc
RE: Bending stress on circular disc
After looking at this problem and studying at the cad-models again, I realized that the stresses is all acting on the ring of the cylinder and not the ring flange.
Therefore the ring is just subjected to a small bolt tightening force of a few kgf. Even if the whole assembly were to be subjected to a drop test, the ring of the cylinder will take all the stresses.
Even if I were to compare the strength of the 4 bolts to a full weld at the top and bottom, based on my calculation, the weld is still stronger than the 4 bolts.
Any comments from anyone?