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Normal Stress in a Straight Member Due to Bending Moment

5 Questions

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Normal Stress in a Straight Member Due to Bending Moment

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Questions and Answers

What is the main cause of normal stress in a straight member?

Shear force

Axial load

Torsional moment

Bending moment (correct)

In the analysis of normal stress due to bending moment, what assumption is made about the length of the member?

Length increases

Length decreases

Length remains unchanged (correct)

Length varies randomly

At which edge of a member does the maximum normal strain occur?

Edge furthest from the neutral axis (correct)

Edge closest to the neutral axis

Center of the member

No specific edge

What is the value of the normal strain at an arbitrary location Y in the member?

<p>-Y/Rho</p> Signup and view all the answers

How does normal stress vary along the Y axis in a straight member under bending moment?

<p>Follows a linear distribution</p> Signup and view all the answers

Study Notes

Introduction to normal stress caused by bending moment in a straight member
External moments cause internal bending moment in the member, leading to deformation
Assumptions made for analysis: neutral plane curves but length remains unchanged, cross-sections remain perpendicular to neutral plane, shape and size of cross-section remains unchanged
Normal strain at arbitrary location Y calculated as epsilon = -Y/Rho
Maximum normal strain occurs at edge furthest from neutral axis, with value of C/Rho
Normal stress follows linear distribution along Y axis, with maximum stress occurring at the same edge
Derivation of equation for maximum normal stress (Sigma max = MZC/Iz) and normal stress at arbitrary location Y (flexure formula)

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Description

This quiz covers the concept of normal stress induced by external bending moments in a straight member. It includes the assumptions made for analysis, calculation of normal strain at an arbitrary location, and the derivation of equations for maximum normal stress and normal stress at any location along the member.