LS Dyna

LS Dyna

Сonvert rad/s to mm for velocity (LS-PREPOST unit)

    • javat33489
      Subscriber

      When setting the rotation speed in LS-PREPOST. Please tell me how to convert rad/s to mm? Those. the speed will be determined by the movement of the drill a distance around its axis.

    • Reno Genest
      Ansys Employee

      Hello,

      The tangenntial speed is v = omega*radius(mm). You can use the radius of the drill in mm and the tangential speed you want to calculate the  rotation speed (omega = v/r). Here is more information:

      https://www.khanacademy.org/science/in-in-class11th-physics/in-in-class11th-physics-motion-in-a-plane/uniform-circular-motion-introduction/a/circular-motion-basics-ap1

       

      Reno.

      Reno.

      • javat33489
        Subscriber

        Thank you!

      • javat33489
        Subscriber

        But I don't need speed, I need movement

    • Reno Genest
      Ansys Employee

      With the speed you can calculation displacement. Assuming a constant speed, you can calculate a displacement based on the time. For example, if you need a displacement of 10 mm in 1  second, then the constant speed will be 10 mm/s. You can then calculate the rotation speed  using the equation above.

       

       

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