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HAMILTONIAN STRUCTURE FOR RIGID BODY WITH FLEXIBLE ATTACHMENTS IN A circular orbit

Acta Mechanica Sinica 1993年第1期9卷 72-79页

作者：程耀黄克累陆启韶 Beijing University of Aeronautics and Astronautics. Beijing China 100083

Hamiltonian structure of a rigid body in a circular orbit is established in this paper. With the reduction technique, the Hamiltonian structure of a rigid body in a circular orbit is derived from Lie-Poisson structure of semidirect product, and Hamiltonian is derived from Jacobi's integral. The above method can be generalized to establish the Hamiltonian structure of a rigid body with a flexible attachment in a circular or- bit. At last, an example of stability analysis is given.

关键词： Hamiltonian structure Poisson manifold rigid-elastic coupled system semidirect product circular orbit

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Analysis of Stress and Strain Fields of Laser Cladding Process on Ring circular orbit

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Journal of Shanghai Jiaotong university(Science) 2011年第3期16卷 296-301页

作者：张平马琳原津萍蔡志海 Science and Technology Laboratory on Remanufacturing Academy of Armored Force Engineering Institute of Chemical Defense

The cracking of coatings and the deformation of base frustrate the application of laser cladding technology especially on surface of the ring circular *** order to solve the two problems above,the stress and strain fields of the laser cladding process on the ring circular orbit were analyzed through the finite-element method,based on the temperature *** wedge module of the ring circular ring was the subject investigated. The calculating results show that during the cladding process the crank point tends to generate the transversal crack;the centre point on the coating/base interface tends to generate longitudinal crack;the intersecting edge of the coating and base tends to generate toe ***,the cracking tendency of the outer marginal point is obviously greater than that of the inner marginal *** rather high stress appears at the border position where the constraint exists,and the stress on the point in front of molten pool under the range of laser irradiation is large as *** the displacement becomes larger as the cladding process proceeds.

关键词： laser cladding circular orbit stress and strain field

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Equilibrium Positions of a Cable-Connected Satellites System under Several Influences

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International Journal of Astronomy and Astrophysics 2016年第3期6卷 288-292页

作者： Santosh Kumar Sangam Kumar P. G. Department of Physics L. S. College B. R. A. Bihar University Muzaffarpur Bihar India

The present paper deals with the study of equilibrium positions of the motion of a system of two artificial satellites connected by a light, flexible, inextensible and non-conducting cable under the influence of solar radiation pressure, earth’s oblateness, shadow of the earth and air resistance. Here, we study the case of circular orbit of the centre of mass of the system. We derive differential equations of motion of the system. General solutions of the differential equations are beyond the reach. On the other hand, the general solutions do not serve our purpose. Jacobian integral of the system has also been obtained. Thereafter equilibrium positions of the motion of the system have been obtained.

关键词： Equilibrium Positions Two Cable-Connected Satellites circular orbit

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