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-->//(Threaded Joints) Example 7.23
-->//Refer Fig.7.47 on page 267
-->//Maximum pressure in the vessel Pmax (MPa)
-->Pmax = 1
Pmax =
1.
-->//Minimum pressure in the vessel Pmin (MPa)
-->Pmin = 0
Pmin =
0.
-->//Seating pressure for the gasket PSeat (MPa)
-->PSeat = 5
PSeat =
5.
-->//Number of bolts N
-->N = 8
N =
8.
-->//Assume the stiffness of the bolts to be 1N/mm kb
-->kb = 1
kb =
1.
-->//Calculate the stiffness of the parts kc
-->kc = 4 * kb
kc =
4.
-->//Factor of safety fs
-->fs = 2
fs =
2.
-->//Ultimate tensile strength of bolt material Sut (N/mm2)
-->Sut = 780
Sut =
780.
-->//Yield tensile strength of the bolt material Syt (N/mm2)
-->Syt = 580
Syt =
580.
-->//Endurance limit in bending Sdash (N/mm2)
-->Sdash = 260
Sdash =
260.
-->//Fatigue stress concentration factor Kf
-->Kf = 3
Kf =
3.
-->//Inner diameter of the gasket Di (mm)
-->Di = 300
Di =
300.
-->//Outer diameter of the gasket Do (mm)
-->Do = 300 + (2 * 50)
Do =
400.
Core cross-section area of the bolt(A) = 74.889729 mm2
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