Determine the secondary shear stress acting on the bolt 3 and its direction. The bolts are equidistant having separated by 60mm and the margin to the left and right is 25mm.Also P=5kN acts at a distance of 200mm from the channel.
A)6100n vertically up
B)4500n vertically down.
C)6100n vertically up.
D)4500n vertically down

Question

Quizplus · Accepted Answer

The secondary shear stress on bolt 3 is calculated using the principle of moments. The force P creates a moment about the centerline of the bolt group, which is then distributed among the bolts based on their distances from the centerline. Given the symmetry and the distances provided, bolt 3 experiences a shear stress due to this moment. The direction is determined by the direction of the applied force and its moment arm, leading to a vertically upward force on bolt 3.

Determine the Secondary Shear Stress Acting on the Bolt 3