Bending theory: stress at the neutral axis of a beam cross-section Define the neutral axis of a beam cross-section under pure bending. Identify the bending stress value at the neutral axis.
Mechanical Engineering
Strength of Materials
Difficulty: Easy
Choose an option
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AZero
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BMinimum (but not zero)
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CMaximum
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DInfinity
Answer
Correct Answer: Zero
Explanation
ConceptIn pure bending: σ = (M/I)·y, where y is the distance from the neutral axis (NA).At the NA, y = 0 ⇒ σ = 0.
Final AnswerZero.