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Beam Deflection

  1. Mar 21, 2012 #1
    If i have a simple suppoted beam, let's say for example 2 supports with overhanging loads at end and/or midspan. DOES IT ALWAYS HAVE zero deflection at the support? or are there times that there is deflection at those supports? :confused:
     
  2. jcsd
  3. Mar 21, 2012 #2

    Mech_Engineer

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    The definition of a "support" in a simply-supported beam bending problem is zero deflection.
     
  4. Mar 21, 2012 #3
    Thanks! :D
     
  5. Mar 22, 2012 #4
    Two things come to mind: 1) if the ground support for the supports give or 2) if the support structure gets somewhat crushed by the weight. Other than that, you assume the support structure does not give.
     
  6. Mar 22, 2012 #5

    OldEngr63

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    By definition, a support is assumed to be rigid unless something else is said about it. In reality, we know that nothing is truly rigid, and if you think support flexibility is a significant aspect of your problem, you should model the support as a spring (possibly non-linear, if you want to get fancy) to take flexibility into account. This usually complicates problems significantly, and is usually avoided if at all possible.
     
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