5. Structures and Materials

Stress Analysis — Quiz

Test your understanding of stress analysis with 5 practice questions.

Practice Questions

Question 1

Which failure criterion states that yielding begins when the maximum shear stress reaches the shear yield strength under uniaxial tension?

Question 2

A wing spar has section modulus Z = 1.5×10^{-4} m^3 and is subjected to a bending moment M = 30,000 N·m. What is the maximum bending stress at the extreme fiber?

Question 3

A thin-walled cylindrical fuselage section of radius r = 2 m and wall thickness t = 10 mm is subjected to internal pressure p = 50 kPa. What is the hoop (circumferential) stress?

Question 4

Which failure criterion is based on the distortion energy theory and is typically used for predicting yielding in ductile materials under multiaxial stress states?

Question 5

A flat plate with a small circular hole experiences a nominal tensile stress of 80 MPa. If the stress concentration factor Kₜ at the hole is 2.5, what is the maximum local normal stress?