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 Zh. Vychisl. Mat. Mat. Fiz., 2020, Volume 60, Number 1, Pages 80–87 (Mi zvmmf11016)

Application of computer algebra methods to investigation of stationary motions of a system of two connected bodies moving in a circular orbit

S. A. Gutnikab, V. A. Sarychevc

a MGIMO University, Moscow, 119454 Russia
b Moscow Institute of Physics and Technology (National Research University), Dolgoprudnyi, Moscow oblast, 141701 Russia
c Federal Research Center Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, Moscow, 125047 Russia

Abstract: Computer algebra and numerical methods were used to investigate the properties of a nonlinear algebraic system determining the equilibrium orientations of a system of two bodies connected by a spherical hinge that move in a circular orbit under the action of a gravitational torque. Primary attention was given to equilibrium orientations of the two-body system in the special cases when one of the principal axes of inertia of both the first and second body coincides with the normal to the orbital plane, the radius vector, or the tangent to the orbit. To determine the equilibrium orientations of the two-body system, the set of stationary algebraic equations of motion was decomposed into nine subsystems. The system of algebraic equations was solved by applying algorithms for constructing Gröbner bases. The equilibrium positions were determined by numerically analyzing the roots of the algebraic equations from the constructed Gröbner basis.

Key words: system of two bodies, circular orbit, Lagrange equations, equilibrium positions, computer algebra, Gröbner basis.

DOI: https://doi.org/10.31857/S0044466920010111

English version:
Computational Mathematics and Mathematical Physics, 2020, 60:1, 74–81

Bibliographic databases:

UDC: 519.67
Revised: 29.07.2019
Accepted:18.09.2019

Citation: S. A. Gutnik, V. A. Sarychev, “Application of computer algebra methods to investigation of stationary motions of a system of two connected bodies moving in a circular orbit”, Zh. Vychisl. Mat. Mat. Fiz., 60:1 (2020), 80–87; Comput. Math. Math. Phys., 60:1 (2020), 74–81

Citation in format AMSBIB
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