GATE ME 2017 Set 1 — Question 19
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Machine Design → Machine Elements → Bolted, Riveted & Welded Joints
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Question
Consider the schematic of a riveted lap joint subjected to tensile load , as shown below. Let be the diameter of the rivets, and be the maximum permissible tensile stress in the plates. What should be the minimum value for the thickness of the plates to guard against tensile failure of the plates? Assume the plates to be identical.
Correct answer
(A) (F)/(S_f(W-2d))
Solution
Tensile failure (tearing) of the plate occurs at the section with the minimum area. From the top view, there are two rivets in a single row perpendicular to the direction of the load . The net width of the plate at this critical section is .
The net area resisting tension is , where is the thickness of the plate.
The tensile stress is given by .
For safety against tensile failure, .
.
Thus, the minimum thickness is .
The net area resisting tension is , where is the thickness of the plate.
The tensile stress is given by .
For safety against tensile failure, .
.
Thus, the minimum thickness is .
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