-->//(Cylinders and Pressure Vessels) Example 22.8
 
-->//Inner diameter of the tube D1 (mm)
 
-->D1 = 50
 D1  =
 
    50.  
 
-->//Outer diameter of the tube D2 (mm)
 
-->D2 = 75
 D2  =
 
    75.  
 
-->//Outer diameter of the jacket D3 (mm)
 
-->D3 = 100
 D3  =
 
    100.  
 
-->//Internal pressure on the compound tube Pi (MPa)
 
-->Pi = 35
 Pi  =
 
    35.  
 
-->//Young's modulus of the of the tube E (N/mm2)
 
-->E = 207000
 E  =
 
    207000.  
 
Shrinkage pressure(P) = 3.615169 N/mm2 
Inner diameter of the jacket(id) = 74.991916 mm 
Lines are plotted in the curve due to the consideration of only 3 points