Calculate the maximum torque that can be applied.  b. If that bar were to be left hollow, with the same diameter but with a wall thickness of 5mm, how much would be the new Maximum allowable torque?   c. What diameter would it have to be, if I need to respect a wall thickness of 3mm and  support the same Torque calculated in the first point.

Q3.For the stress state shown below: 300 MPa 100 MPa 100 MPa → 200 MPa 200 MPa - 100 MPa 100 MPa 300 MPa (a) Plot Mohr's circle for the stress state. (b) Calculate the principal stresses and their orientation with respect to ther axis? (c) Using your answer from (b) to help you, plot Mohr's circle for strain.

Q5) The wooden block shown in Figure (4) will fail if the shear stress acting along the grain is (3.85 MPa). If the normal stress (d, = 2.8 MPa), determine the necessary compressive stress (a) that will cause failure. Figure (4)

Problems: Stress (ksi) 53.2 1. Determine the ductility (u) of the material based on the stress- strain diagram (problem S5.1). 43.6 37.1 0.0013 0.0063 0.163 0.247 Strain (in/in)

A steel wire (E= 200 GPa) of diameter d= 1.25 mm is bent around a pulley of radius Ro= 500 mm. What is maximum stress in the wire?

Refer to the figure 1. Which of the following most nearly gives the value of the major principal stress? Answer: 216 kPA 2. Which of the following most nearly gives the value of the normal stress on the plane AB? Answer: 174.64 kPa 3. Which of the following gives the value of the shear stress on the plane AB? Answer: 54.64 kPA

Strength For the state of plane stress shown, determine the largest value of o, for which the maximum in plane shear stress is equal to or less than 75 MPa. After you determine the value, draw Mohr circle for the case

1) A brass pipe with a 0.5inch inside diameter and 1/16 inch wall is twisted using a 14inch long pipe wrench. If a load of 74 lbs is applied perpendicularly to the end of the wrench. If the E of brass is 14.6x10^6 psi, what is the max torsion stress in the pipe? • Find the outside diameter of the pipe using the ID and given wall thickness. • Find the polar moment of inertia of the cross-section of the pipe. • Find the torque being applied to the pipe, via the wrench. • Use the torsional stress equation to find the requested stress. Compare your answer: Max Torsional Stress 36.61 ksi