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Thread: Beam Bending Supported on Both Ends with Single Load at Center

  1. #1
    Associate Engineer
    Join Date
    Jan 2018
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    Beam Bending Supported on Both Ends with Single Load at Center

    I am trying to use the beam bending calculator and keep coming up with NaN n the results. What does it mean? Also the number I enter in the moment of inertia column is .0136 (from Solid Works mass properties) and the calculator rounds it off to 0.000, any Suggestions? I am trying to calculate how much bow I could expect by adding ribs to a plastic injection molded part. Thanks. in advance for your help.

  2. #2
    Administrator Kelly Bramble's Avatar
    Join Date
    Feb 2011
    Location
    Bold Springs, GA
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    2,094
    Your numbers are too small for the calculator to handle. Which means that your design is unpredictable.

    Hand calculate using the referenced equations..

    https://www.engineersedge.com/beam_b..._bending2e.htm
    Tell me and I forget. Teach me and I remember. Involve me and I learn.

  3. #3
    Associate Engineer
    Join Date
    Jan 2018
    Posts
    2
    Kelly, thanks for the feedback, will do as you suggested.

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