A cast-iron cylinder of 300mm bore carries a pressure of 30 Newtons per squaremillimetre; what...

Question

A cast-iron cylinder of 300mm bore carries a pressure of 30 Newtons per squaremillimetre; what should be its thickness for a unit working stress of 25 newtons persquare millimetre?

David · Accepted Answer

Solution:
Area of the bore,   
   
 
           
Force per unit              
So, the total force will be,                           
Now, the working stress            
So, by the formula of shear stress 
  
 
  

   
 
Let the thickness of the bore be   
Then,

A cast-iron cylinder of 300mm bore carries a pressure of 30 Newtons per squaremillimetre; what should be its thickness for a unit working stress of 25 newtons persquare millimetre?

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