General Mechanical

General Mechanical

Random vibration of container frame

    • charlietran
      Subscriber
      Hi guys!nI want to do a random vibration analysis of container frame made from square welded tubular steel. The goods are tightly inserted inside the container frame using EPS foam. The total weight of the goods is 2 tonnes. The container frame is fixed on truck floor by cables. Input PSD for the simulation is taken from MIL-STD-810 G for composite wheeled vehicle. The problem is how to modeling the mass of the goods inside the container and how to apply boundary condition in three cases: vibration in vertical, transverse and longitudinal directions. Shoul I use distributed mass or point mass? How to apply boundary condition in this simulation? Thanks in advance!n
    • peteroznewman
      Subscriber
      I suggest you model the goods by creating solid bodies that are set to be Rigid.nYou would model the EPS between the solid bodies and the container walls. You can potentially create the body using a Boolean subtract from the goods for a block that fills the space of the container.nDo you will need material properties for EPS foam including the damping properties for EPS foam.n
    • charlietran
      Subscriber
      @peteroznewman Thank you very much for your suggestion. n
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