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Homework Help: Calculate Amplitudes

  1. Dec 7, 2016 #1
    1. The problem statement, all variables and given/known data
    In the automotive damper test machine mentioned in Task 1 the damper is mounted vertically, the top end connected to a static fixing, the bottom to a table which is moved vertically by an actuator. The moving mass is 500kg, and the design case for the rig is based upon testing the dampers with the characteristics shown in Appendix 2 throughout their active range. (Note: ignore the specifications for Task 1 here).

    The actuation system is position controlled, with two test inputs as follows:

    • “Quasi-static” tests using 0.2Hz triangle wave motions so that the basic damper rate

      (N/ms-1) can be determined from the corresponding constant velocity movements.

    • Dynamic tests using 2Hz sinusoidal motions to assess the dynamic performance at

      typical suspension frequencies.
    1. a) Calculate amplitudes for the two types of test input that would be required for effective testing of the dampers

    Attached Files:

  2. jcsd
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