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Equation for Solid Planet Structure

  1. Jan 15, 2007 #1
    I'm looking for an radial equation to find the pressure or density of the interior of a moon or rock planet. It would involve Young's modulus or Poisson's ratio or something like. Any help?
     
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  3. Jan 15, 2007 #2

    Chris Hillman

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    Well, you should probably start with something more basic: the equation of hydrostatic equilibrium. This is relevant to models in which you model a planet or star as a ball of fluid, but also to models in which you model it as an (isotropic, inhomogeneous) elastic medium. I take it you are looking for a Newtonian model? There are many books on Newtonian models of stellar structure, also many books on geophysics.
     
  4. Jan 16, 2007 #3
    There are books on geophysics? Really? Your reply is kind of a downer. I've solved hydrostatic eq'ns for spheres and I'm looking for a next thing to do.
     
  5. Jan 20, 2007 #4

    Obs

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  6. Jan 20, 2007 #5

    Chris Hillman

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    The next thing after fluid balls in hydrostatic equilibrium?

    Hi, Helios,

    Sorry if I underestimated your previous experience. Should I infer from your handle that you are particularly interested in stellar interiors? Would adding rotation whet your appetite? If so, if you know about McLaurin spheroids, I suppose the obvious next question is: have you studied Chandrasekhar, Selected Papers, esp. Vols 1, 4? That should keep you happy for a while!
     
    Last edited: Jan 20, 2007
  7. Jan 28, 2007 #6
    Hi Chris. I have Chandra's book "Stellar Interiors" and that's it. Out of it I'm trying to understand his explanation of composite polytropes. I don't get it and there are no examples.
    Anyway I'm looking for a solid planet equation that might resemble Emden's eq'n.
     
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