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Calculating Shock imparted by an Impact

  1. Nov 14, 2006 #1
    I am designing a piece of test equipment that will be mounted onto a
    small rocket for meteorological testing.

    The people running the rocket side have mandated a series of tests that
    all test equipment must pass before being fitted.

    One set of tests are pretty severe shock tests representative of the
    rockets launch that I am happy to have carried out.

    Another test is to prove that some klutz in the assembly dept. can drop
    the equipment onto a concrete floor whilst assembling the rocket.

    I have a gut feeling that the shock experienced by dropping the unit
    from 1m is much less than the 50g shock experienced by being launched and don't want to pay some third party to carry out pointless tests when I can spend the money on Beer.

    My problem is how to I prove mathematically that the maximum shock
    experienced by dropping the unit onto a flat surface is less than the
    shocks experienced during shock testing?

    I can calculate the impact velocity and force, but don't know how to estimate the deformation of the concrete floor or the unit. (I was going to estimate the unit as being a solid lump of the Al casing material to give me a worst case figure).
  2. jcsd
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