PE Mechanical Machine Design Practice Questions - PE Mechanical Machine Design And Materials Exam

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A ductile steel has yield strength Sy = 350 MPa. A part experiences principal stresses sigma_1 = 200 MPa, sigma_2 = 100 MPa, sigma_3 = 0. Using the distortion-energy (von Mises) criterion, what is the factor of safety against yielding?

1.5 1.75 2.0 2.5

Correct Answer:

2.0

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