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Thread: Force/Acceleration amplification through a linkage

  1. #1
    Associate Engineer
    Join Date
    Nov 2016
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    1

    Force/Acceleration amplification through a linkage

    Hello all,

    I need help determining the force/acceleration output through a linkage. Please see the attached file for the problem.

    I'm placing a linear actuator horizontally which is connected to two linear bearings placed on a vertical beam. The linear motion of the actuator is transmitted to the bearings giving them horizontal motion. The actuator is exerting a 5lbf force and moving at a velocity of 2 in/sec and an acceleration of 2 in/sec^2. Let's assume that the two beams connecting the actuator to the linear bearing are 5 inches in length. Is there a way to calculate the amount of force that the lower bearing will exert on the solid block placed under it and how much will be the increase in its velocity/acceleration?

    I just made up all the numbers so please feel free to use your own numbers if these don't make any sense. Thank you!
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  2. #2
    Technical Fellow jboggs's Avatar
    Join Date
    Mar 2011
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    Myrtle Beach, SC
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    828
    "Is there a way to calculate the amount of force that the lower bearing will exert on the solid block placed under it and how much will be the increase in its velocity/acceleration?"

    Yes, there is a way. Free Body Diagrams and Vector Analysis. Are you asking us to do it for you?

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