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Unformatted text preview: to 1.4 t, where t is the thickness of cylinder wall.
The diameter of the studs or bolts may be obtained by equating the gas load due to the maximum
pressure in the cylinder to the resisting force offered by all the studs or bolts. Mathematically, where π
× D2 . p
( d ) 2 σt
= Cylinder bore in mm,
= Maximum pressure in N/mm2,
= Number of studs. It may be taken as 0.01 D + 4 to 0.02 D + 4
= Core or minor diameter, i.e. diameter at the root of the thread in
= ns × 1130 n A Textbook of Machine Design σt = Allowable tensile stress for the material of studs or bolts in MPa or
N/mm2. It may be taken as 35 to 70 MPa.
The nominal or major diameter of the stud or bolt (d ) usually lies between 0.75 tf to tf, where
tf is the thickness of flange. In no case, a stud or bolt less than 16 mm diameter should be used.
The distance of the flange from the centre of the hole for the stud or bolt should not be less than
d + 6 mm and not more than 1.5 d, where d is the nominal diameter of the stu...
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This note was uploaded on 09/30/2012 for the course MECHANICAL 403 taught by Professor A.thirumoorthy during the Spring '11 term at Anna University Chennai - Regional Office, Coimbatore.
- Spring '11