- #1
joe465
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Homework Statement
A cast-iron cylinder of 300mm bore carries a pressure of 30 Newtons per square
millimetre; what should be its thickness for a unit working stress of 25 Newtons per
square millimetre?
Homework Equations
ó1 = pd/2t
t=pd/2tó1
The Attempt at a Solution
t=pd/2tó1
t= 30*300/2*25
=180mm
Its got to be wrong as its way too big but I am unsure on where I am going wrong, any help would be much appreciated.
'Edit'
ó1/pd=2t
25/(30*3000) = 2t
2t = 0.00277778
t= 0.0014mm (4dp)
Maybes this one, I am not sure.
Thanks, Joe
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