The strains determined by the use of the rosette attached as shown during the test of a machine element are £a = 600 um/m, £b = 450 um/m, &c = -75 pm/m. (Use E=200 GPa, v=0.3)
Determine:
(a) Draw Mohr's circle for plane strain 3D
(b) The plane strain (Ex, Ey, Yxy).
(c) principal strain (E1, E2, E3, Ymax)

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)