An AISI 1018 steel has a yield strength, S, = 295 MPa. Under the plane stress condition the stresses at a critical point are determined to be: σ = -30 MPa,σ = -65 MPa and Txy = 40 MPa 1. Determine the principle stresses at the critical point (5 points) 2. Determine the factor of safety, using the distortion-energy theory (5 points) 3. Determine maximum shear stress (in-lane and out-of-plane) (5 points) 4. Determine the factor of safety, using the maximum shear stress theory (5 points)

An AISI 1018 steel has a yield strength, S, = 295 MPa. Under the plane stress condition the stresses at a critical point are determined to be: σ = -30 MPa,σ = -65 MPa and Txy = 40 MPa 1. Determine the principle stresses at the critical point (5 points) 2. Determine the factor of safety, using the distortion-energy theory (5 points) 3. Determine maximum shear stress (in-lane and out-of-plane) (5 points) 4. Determine the factor of safety, using the maximum shear stress theory (5 points)

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter8: Applications Of Plane Stress (pressure Vessels, Beams, And Combined Loadings)

Section: Chapter Questions

Problem 8.5.11P: The hollow drill pipe for an oil well (sec figure) is 6,2 in. in outer diameter and 0.75 in. in...

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The hollow drill pipe for an oil well (sec figure) is 6,2 in. in outer diameter and 0.75 in. in thickness. Just above the bit, the compressive force in the pipe (due to the weight of the pipe) is 62 kips and the torque (due to drilling) is 185 kip-in. Determine the maximum tensile, compressive, and shear stresses in the drill pipe.
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