非完整系统Boltzmann-Hamel方程的Birkhoff化及其
广义辛算法
解加芳;庞硕;邹杰涛;李国富
【期刊名称】《物理学报》 【年(卷),期】2012(061)023
【摘要】针对非完整系统的Boltzmann-Hamel方程,当其满足一定条件时,可以进行广义Birkhoff化.构造生成函数,利用当前比较优越的非自治Birkhoff广义辛算法对其进行数值仿真.仿真结果和传统的Runge—Kutta算法结果相比较,非自治Birkhoff广义辛算法在长期跟踪后更加准确.%For a Boltzmann-Hamel equation of nonholonomic mechanical system, when it meets certain conditions, the Boltzmann-Hamel equation can be transformed into a Birkhoffian system. By constructing the generating function, the system is investigated numerically using the generalized symplectic geometric algorithm of the nonautonomous Birkhoffian system. Compared with the above-mentioned algorithm with the classical Runge-Kutta method, Birkhoffian symplectic scheme is very accurate in a long-term tracing. 【总页数】5页(1-5)
【关键词】非完整约束;Boltzmann—Hamel方程;Birkhoff辛算法 【作者】解加芳;庞硕;邹杰涛;李国富
【作者单位】北方工业大学理学院,北京100144;北方工业大学理学院,北京100144;北方工业大学理学院,北京100144;北方工业大学理学院,北京100144