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    Maximum Normal Stress Due to Bending

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    For the beam illustrated (see attachment), determine the dimension b for which the maximum normal stress due to bending is 40 MPa.

    a) 7.45 mm

    b) 8.95 mm

    c) 8.33 mm

    d) 9.36 mm

    © BrainMass Inc. brainmass.com October 9, 2019, 8:46 pm ad1c9bdddf
    https://brainmass.com/engineering/mechanical-engineering/maximum-normal-stress-due-bending-162046

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    Solution

    We know that section modulus of the rectangular section

    Z = bd2/ 6 = b3/6

    Normal stress / bending = M / Z

    ...

    Solution Summary

    For a give beam, the stress of bending is found in a Word attachment.

    $2.19