Abstract
Based on modern differential geometry, the symplectic structure of a Birkhoffian system which is an extension of conservative and nonconservative systems is analyzed. An integral invariant of Poincaré-Cartan's type is constructed for Birkhoffian systems. Finally, one-dimensional damped vibration is taken as on illustrative example and integral invariant of Poincaré's type is found.
Original language | English |
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Pages (from-to) | 68-72 |
Number of pages | 5 |
Journal | Applied Mathematics and Mechanics (English Edition) |
Volume | 24 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 2003 |
Keywords
- Birkhoffian systems
- Poincaré-Cartan integral invariants
- Self-adjointness
- Symplectic structure