The block shear failure of a bolted joint in tension occurs becau
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The block shear failure of a bolted joint in tension occurs because of
1. Use of high shear strength bolts
2. Use of plates with higher bearing strength
A. 1 only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2
Please scroll down to see the correct answer and solution guide.
Right Answer is: C
SOLUTION
Block shear failure is combined tension-shear failure i.e. failure plane includes both tension (normal to the force) and shear (parallel to the force) failure planes. It is a failure in which a block of a member is torn out as depicted below around the bolt holes in the periphery.
When high shear strength bolt and high bearing strength plates are used, length of connection gets reduced leading to block shear failure.
