Brackets, such as the one shown, are used in mooring small watercraft. Failure of such brackets is usually caused by bearing pressure of the mooring...

Brackets, such as the one shown, are used in mooring small watercraft. Failure of such brackets isusually caused by bearing pressure of the mooring clip against the side of the hole. Our purpose here isto get an idea of the static and dynamic margins of safety involved. We use a bracket 6 mm thick madeof hot-rolled 1018 steel. We then assume wave action on the boat will create force F no greater than5kN.a) Identify the moment M that produces a shear stress on the throat resisting bending action witha “tension” at A and compression at C.b) Find the force component Fy that produces a shear stress at the throat resisting a “tension”throughout the weld.c) Find the force component Fx that produces an in-line shear throughout the weld.d) Find A, Iu and I using table 9-2 in part (refer Shigley’s Mechanical Engineering Design,Budynas,Nisbett)e) Find the shear stress at A due to Fy and M, the shear stress due to Fx, and combine to .f) Find the factor of safety guarding against shear yielding in the weldment.g) Find the factor of safety guarding against static failure in the parent metal in the weld.h) Find the factor of safety guarding against a fatigue failure in the weld metal using a Gerberfailure criterion.