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  • Turbocharger bearing design

    Discussion in 'Calculations' started by ash_awa2001, Jan 13, 2013.

    1. ash_awa2001

      ash_awa2001 New Member

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      I have been working in dyrobes to design suitable bearings for new compressor and turbine design.
      I am facing trouble finding details on journal bearing load calculation.

      W= w1 + w2 x rpm^2 + w2 x rpm^3

      W is the total load but how do I calculate w1 , w2
       
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    3. mhjones12

      mhjones12 Well-Known Member

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      I don't understand why the load on the journal bearing would be a function of speed only. Wouldn't this be dependent on the external mechanism that the journal is supporting? Why is there no mass*gravity term? Where is the function you show from?, it seems very strange. It looks like it is a curve fit function in which case the constants may come from a lookup table and not from a calculation. Can you give more details?
       
    4. srdfmc

      srdfmc Well-Known Member

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      When rpm=0 then w=w1. I guess this is your static load. Then when rpm>0 you get w2

      Regards
       

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