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Wheel overcome obstacle at speed.

  1. May 17, 2014 #1
    Hi there, I have a project of torsion bar. I need to know value of force is making a torque on it.

    So I have a velocity [tex]V=40km/h[/tex], mass per wheel [tex]m=530kg[/tex], radius of wheel [tex]R=290 mm[/tex] and heigh of obstacle [tex]h = 6 cm[/tex]. What will be the reaction N, on both axis, of obstacle to tire? I have no idea how to calculate that.

    4.png


    Also, tire pressure is p = 0,2 MPa, tire stiffnes k = 150 000 N/m and tire supression is c= 150 Ns/m as tire will absorb some of impact force, but what value of force won;t be absorbed?
     
    Last edited: May 17, 2014
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  3. May 17, 2014 #2

    Simon Bridge

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    Does the normal force do any work?
     
  4. May 18, 2014 #3
    At axis Y it lifts wheel and axis X it is responsible for loosing some kinetic energy.
     
  5. May 18, 2014 #4

    Simon Bridge

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    Is that a "yes"?
    Do you know a relationship between force and work?
     
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