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Static/dynamic spring stiffness problem

  1. Nov 17, 2009 #1
    Please refer to the attached sketch and calculations.

    I have a problem involving a spring set (in series) that is to be compressed and inserted into a defined gap. This results in a precompression in both springs (of the same force). A dynamic load is then applied (the spring set now acts in parallel and the dynamic stiffness of the springs is used) and the load is shared by the top and bottom springs proportional to their relative stiffness.

    My calculations show that there is tension in the top spring, yet it is still compressed.

    Can somebody please explain how this works.

    Many thanks.
     

    Attached Files:

  2. jcsd
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