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Draw neat sketch showing the details of cotter joint. State strength equations for each component with suitable failure cross-sectional area.

Question: 

Draw neat sketch showing the details of cotter joint. State strength equations for each component with suitable failure cross-sectional area.

Answer: 

 

It consist of 3 elements i. Socket ii. Spigot iii. Cotter Where, d= End diameter of rodd1= Diameter of spigot/ID of socket d2= Diameter of spigot collar D1= Outer diameter of socket D2= Diameter of socket collar C=Thickness of socket collar t1= Thickness of spigot collar t= thickness of cotter b= Mean width of cotter a= Distance of end of slot to the end of spigot P= Axial tensile/compressive force σt, σc, τ= Permissible tensile, compressive, shear stress for the component material