中国物理B ›› 2018, Vol. 27 ›› Issue (9): 90502-090502.doi: 10.1088/1674-1056/27/9/090502

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Conservation laws for Birkhoffian systems of Herglotz type

Yi Zhang(张毅), Xue Tian(田雪)   

  1. 1 College of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China;
    2 College of Mathematics and Physics, Suzhou University of Science and Technology, Suzhou 215009, China
  • 收稿日期:2018-03-20 修回日期:2018-05-29 出版日期:2018-09-05 发布日期:2018-09-05
  • 通讯作者: Yi Zhang E-mail:zhy@mail.usts.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11572212 and 11272227), the Innovation Program for Postgraduate in Higher Education Institutions of Jiangsu Province, China (Grant No. KYZZ16_0479), and the Innovation Program for Postgraduate of Suzhou University of Science and Technology, China (Grant No. SKCX16_058).

Conservation laws for Birkhoffian systems of Herglotz type

Yi Zhang(张毅)1, Xue Tian(田雪)2   

  1. 1 College of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China;
    2 College of Mathematics and Physics, Suzhou University of Science and Technology, Suzhou 215009, China
  • Received:2018-03-20 Revised:2018-05-29 Online:2018-09-05 Published:2018-09-05
  • Contact: Yi Zhang E-mail:zhy@mail.usts.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11572212 and 11272227), the Innovation Program for Postgraduate in Higher Education Institutions of Jiangsu Province, China (Grant No. KYZZ16_0479), and the Innovation Program for Postgraduate of Suzhou University of Science and Technology, China (Grant No. SKCX16_058).

摘要:

Conservation laws for the Birkhoffian system and the constrained Birkhoffian system of Herglotz type are studied. We propose a new differential variational principle, called the Pfaff-Birkhoff-d'Alembert principle of Herglotz type. Birkhoff's equations for both the Birkhoffian system and the constrained Birkhoffian system of Herglotz type are obtained. According to the relationship between the isochronal variation and the nonisochronal variation, the conditions of the invariance for the Pfaff-Birkhoff-d'Alembert principle of Herglotz type are given. Then, the conserved quantities for the Birkhoffian system and the constrained Birkhoffian system of Herglotz type are deduced. Furthermore, the inverse theorems of the conservation theorems are also established.

关键词: Birkhoffian system, conversation law, differential variational principle, variational problem of Herglotz type

Abstract:

Conservation laws for the Birkhoffian system and the constrained Birkhoffian system of Herglotz type are studied. We propose a new differential variational principle, called the Pfaff-Birkhoff-d'Alembert principle of Herglotz type. Birkhoff's equations for both the Birkhoffian system and the constrained Birkhoffian system of Herglotz type are obtained. According to the relationship between the isochronal variation and the nonisochronal variation, the conditions of the invariance for the Pfaff-Birkhoff-d'Alembert principle of Herglotz type are given. Then, the conserved quantities for the Birkhoffian system and the constrained Birkhoffian system of Herglotz type are deduced. Furthermore, the inverse theorems of the conservation theorems are also established.

Key words: Birkhoffian system, conversation law, differential variational principle, variational problem of Herglotz type

中图分类号:  (Nonlinear dynamics and chaos)

  • 05.45.-a
11.30.-j (Symmetry and conservation laws) 45.10.Db (Variational and optimization methods)