Shear Area in Washer: Calculating Load and Area

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The discussion focuses on the sizing of washers for bolts, particularly regarding their thickness and the forces they experience. Washers are primarily under compression from the bearing surfaces of the bolt head or nut, and bending occurs if the bolt hole is larger than the washer hole. The shear load on the washer is a key concern, with the shear area calculated as pi times the outer diameter of the washer multiplied by its thickness. Understanding these factors is crucial for proper washer design, especially for first-year engineering students. The conversation emphasizes the importance of visualizing shear loads in washers for effective application in engineering contexts.
sriram123
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Hi all,
Just curious about how to size the thickness of washer for a particular class of bolt.(I'm not actually designing one but want to know how standard washers are sized.)I'm having a feeling that the washer will be under compression (Bearing surface of bolt head or nut).Bending will be there if the hole size for bolt is larger than hole size of washer.

My question is what will be the value of shear load on bolt and what will be its shear area (Will it be pi*d*t ? d being O.D. of washer and t being thickness of washer).

I'm a first yr student so i cannot clearly visualise the shear load in washer.

Thanks in advance
 
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A correction.In my second para I mis typed as "shear load on bolt" actually i meant "shear load on washer" .

Sorry for the mistake.

Thanks in advance
 
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