The Librational Dynamics of Deformable Bodies

Details The Librational Dynamics of Deformable Bodies The Librational Dynamics of Deformable Bodies

Sep 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970cemec...1..289m&link_type=abstract

Celestial Mechanics, Volume 1, Issue 3-4, pp. 289-296

Physics

Scientific paper

The volume average of the strain tensor in a body moving in an inverse-square force field is evaluated. The calculation is carried out assuming the satellite to be an isotropic elastic body whose center of mass moves in a planar orbit. An approximate expression, in terms of its volume and elastic properties, is presented for the strain energy in the satellite. Using this expression the equation of planar librational motion is written explicity. This equation is discussed for both circular and elliptic orbits and is modified to include the effects of energy dissipation in the body. It is shown that the concept of Adiabatic Invariants allows one to analyze the influence of slow changes in the material volume and elasticity.

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