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    Article

    Noether's theory of mechanical systems with unilateral constraints

    Noether's theory of dynamical systems with unilateral constraints by introducing the generalized quasi-symmetry of the infinitesimal transformation for the transformation group G, is presented and two examples...

    in Applied Mathematics and Mechanics (2000)

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    Article

    Lie symmetries and conserved quantities of holonomic variable mass systems

    In this paper, the Lie symmetries and the conserved quantities of the holonomic variable mass systems are studied. By using the invariance of the ordinary differential equations under the infinitesimal transfo...

    Mei Fengxiang in Applied Mathematics and Mechanics (1999)

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    Article

    Equations of motion for nonholonomic mechanical systems with unilateral constraints

    In this paper, the equations of motion for nonholonomic mechanical system with unilateral holonomic constraints and unilateral nonholonomic constraints are presented, and an example to illustrate the applicati...

    Zhang Yi, Mei Fengxiang in Applied Mathematics and Mechanics (1999)

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    Article

    Connections and geodesic characteristic of equations of motion for constrained mechanical systems

    The geodesic characteristic of equations of motion for nonautonomous constrained mechanical systems is studied in the modern setting of global differential geometry. A necessary and sufficient condition for th...

    Luo Shaokai, Guo Yongxin, Mei Fengxiang in Applied Mathematics and Mechanics (1998)

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    Article

    Stability of motion for a constrained Birkhoff's system in terms of independent variables

    This paper proposes firstly the Pfaff-Birkhoff-D'Alembert's principle and obtains the equations of motion in terms of the independent variables for a constrained Birkhoff's system from the principle. Secondly,...

    Mei Fengxiang in Applied Mathematics and Mechanics (1997)

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    Article

    Stability for the equilibrium state of Chaplygin's systéms

    The stability for the equilibrium states of Chaplygin's systems is considered. The equations of motion of Chaplygin's systems and the existence conditions of their equilibrium states are given. Some criteria o...

    Zhu Hai**, Shi Rongchang, Mei Fengxiang in Applied Mathematics and Mechanics (1995)