-->//(Threaded Joints) Example 7.18
 
-->//Refer Fig.7.35 on page 256
 
-->//Maximum force acting on the assembly Pmax (kN)
 
-->Pmax = 10
 Pmax  =
 
    10.  
 
-->//Minimum force acting on the assembly Pmin (kN)
 
-->Pmin = 0
 Pmin  =
 
    0.  
 
-->//Yield tensile strength of 45C8 Syt (N/mm2)
 
-->Syt = 380
 Syt  =
 
    380.  
 
-->//Ultimate tensile strength of 45C8 Sut (N/mm2)
 
-->Sut = 630
 Sut  =
 
    630.  
 
-->//Young's modulus of the plain carbon steel E1 (N/mm2)
 
-->E1 = 207000
 E1  =
 
    207000.  
 
-->//Young's modulus of aluminium E2 (N/mm2)
 
-->E2 = 71000
 E2  =
 
    71000.  
 
-->//Fatigue stress concentration factor Kf
 
-->Kf = 2.2
 Kf  =
 
    2.2  
 
-->//Expected reliability (%)
 
-->reliability = 90
 reliability  =
 
    90.  
 
-->//Initial pre-load in the bolt Pi (kN)
 
-->Pi = 5
 Pi  =
 
    5.  
 
-->//Factor of safety fs
 
-->fs = 2
 fs  =
 
    2.  
 
-->//Length of the bolt l (mm)
 
-->l = 25 + 25
 l  =
 
    50.  
 
-->//Assume diameter of the bolt to be less than 7.5mm for Kb to be 1
 
-->d = 1
 d  =
 
    1.  
 
-->//As Ka is incorporated into Kf, assume the assembly to be ground
 
-->//This is just to obtain a random value of Ka
 
-->op = 1
 op  =
 
    1.  
 

Core cross-section area of the bolt(A) = 54.133961 mm2