非完整力学系统的Noether-Lie对称性  

Noether-Lie symmetry of non-holonomic mechanical system

作　　者：方建会[1] 丁宁[1] 王鹏[1] 

机构地区：[1]中国石油大学(华东)物理科学与技术学院,东营257061

出　　处：《物理学报》2006年第8期3817-3820,共4页Acta Physica Sinica

摘　　要：研究了非完整力学系统的一种新对称性———Noether_Lie对称性及其守恒量.给出了非完整力学系统Noether_Lie对称性的定义和判据,提出系统的Noether_Lie对称性导致Noether守恒量和广义Hojman守恒量的定理.举例说明了结果的应用.Hojman守恒量是所给出的广义Hojman守恒量的特例.In this paper, a new symmetry, i.e., Noether-Lie symmetry and its conserved quantities of the non-holonomic mechanical system is studied. The definition and the criterion of the Noether-Lie symmetry for the system are given. A theorem asserting that the Noether-Lie symmetry for the system leads to both the Noether conserved quantity and the general Hojman conserved quantity is presented. An example is given to illustrate the application of the result. The Hojman conserved quantity of the system is a special case of the general Hojman conserved quantity obtained in this paper.

关 键 词：非完整力学系统 Noether-Lie对称性 NOETHER守恒量 广义Hojman守恒量 

分 类 号：O316[理学—一般力学与力学基础] O153.3[理学—力学]