A beam has a bending moment of 2 kN-m applied to a section with a hollow circular cross-section of external diameter 3.9 cm and internal diameter 2 cm. The modulus of elasticity for the material is 210 x 109 N/m2. Calculate the radius of curvature and maximum bending stress. Also, calculate the stress at the point at 0.8 cm from the neutral axis Solution: (i) The moment of inertia = ii) The radius of curvature is (iii) The maximum bending stress is iv) The bending stress at the point 0.8 cm from the neutral axis is

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MIME3 130 / 10. SECTION ASSESSMENTS Homework - Semester
AY 2020 - 2021
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A beam has a bending moment of 2 kN-m applied to a section with a hollow circular
cross-section of external diameter 3.9 cm and internal diameter 2 cm. The modulus of
elasticity for the material is 210 x 10° N/m2. Calculate the radius of curvature and
maximum bending stress. Also, calculate the stress at the point at 0.8 cm from the
neutral axis
Solution:
(i) The moment of inertia =
ii) The radius of curvature is
(iii) The maximum bending stress is
iv) The bending stress at the point 0.8 cm from the neutral axis is
Transcribed Image Text:urses MIME3 130 / 10. SECTION ASSESSMENTS Homework - Semester AY 2020 - 2021 Moving Forward A beam has a bending moment of 2 kN-m applied to a section with a hollow circular cross-section of external diameter 3.9 cm and internal diameter 2 cm. The modulus of elasticity for the material is 210 x 10° N/m2. Calculate the radius of curvature and maximum bending stress. Also, calculate the stress at the point at 0.8 cm from the neutral axis Solution: (i) The moment of inertia = ii) The radius of curvature is (iii) The maximum bending stress is iv) The bending stress at the point 0.8 cm from the neutral axis is
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