Amaterial in the as-rolled condition has a uts of 770 mpa and a yield strength of 600 mpa. static stress concentration factor 1.2 q-1.0; factor of safety 1.75. find the cross sectional area, required if a fully reversed tensile load is applying continuously with a magnitude of+ 90 kn.

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)