5 Cotter joint & knuckle joint.pdf - School of Mechanical Sciences IIT Bhubaneswar 751013 Tutorial Sheet Cotter Knuckle Joints 1 Design a cotter

5 Cotter joint & knuckle joint.pdf - School of...

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School of Mechanical Sciences, IIT Bhubaneswar 751013 Tutorial Sheet: Cotter & Knuckle Joints 1 1. Design a cotter joint to support a load of 30 kN in tension. The material used is carbon steel for which the permissible stresses are as follows: 𝜎 ൌ 50 𝑀𝑃𝑎; 𝜏 ൌ 40 𝑀𝑃𝑎; 𝜎 ൌ 90 𝑀𝑃𝑎 . Assume the load is applied statically as shown in the figure. 2. A knuckle joint has to be designed to transmit 150 kN load. The permissible design stresses are 75 MPa in tension, 60 MPa in shear and 150 MPa in compression.
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2 Empirical relations (available in standard handbooks):
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Unformatted text preview: 3. Design a cotter joint to support a load of 40 kN in tension. The material used is carbon steel for which the permissible stresses are as follows: 𝜎 ΰ―§ ࡌ 55 π‘€π‘ƒπ‘Ž; 𝜏 ࡌ 40 π‘€π‘ƒπ‘Ž; 𝜎 ΰ―– ࡌ 70 π‘€π‘ƒπ‘Ž . Assume the load is applied statically, the thickness of cotter to be ΒΌ of diameter of spigot or inside diameter of socket and length of cotter as 4 times the rod diameter. 4. Design a knuckle joint to transmit 25 kN load in tension. The permissible design stresses are 65 MPa in tension, 50 MPa in shear and 83 MPa in compression....
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