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	Fractional step method for dynamic analysis of constrained multibody system
	Wang, TS ; Xi, YX
	2010-05-10 ; 2010-05-10 ; OCT 26-28, 2005
会议名称	Proceedings of the International Conference on Mechanical Engineering and Mechanics 2005, Vols 1 and 2 ; International Conference on Mechanical Engineering and Mechanics ; Nanjing, PEOPLES R CHINA ; Web of Science
关键词	constrained multibody system DAEs fractional step method central difference NUMERICAL-SIMULATION DECOMPOSITION Engineering, Multidisciplinary Mechanics
中文摘要	The governing equations of the constrained multibody systems are a combination of the differential equations denoting the dynamic equations and the algebraic equations denoting the constraint equations, which are also called DAEs (Differential Algebraic Equations). The difficulty of studying multibody systems dynamics lies in solving the DAEs. Recently, many attempts have been made in this field. In this paper, a novel method which is efficient and effective to solve the DAEs is developed. We use the central difference of system variables to discrete the dynamics equations in the time domain and then we decompose the dynamics equation into the Ideal Equation (IE) and the Constraint Correction Equation (CCE). We solve the equations by fractional step. Compared with the generalized methods, this method can guarantee the solution precision of the dynamics equations at each time-step while satisfying the constraint equations to a high accuracy. Furthermore, this method has little effect on the dynamics equation, with clear physical meaning and requiring less calculation. Also it can cooperate with other integral methods. Two numerical examples are provided to demonstrate the effectiveness of this method.; Nanjing Univ Sci & Technol
会议录出版者	SCIENCE PRESS BEIJING ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100707, PEOPLES R CHINA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/18756]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, TS,Xi, YX. Fractional step method for dynamic analysis of constrained multibody system[C]. 见:Proceedings of the International Conference on Mechanical Engineering and Mechanics 2005, Vols 1 and 2, International Conference on Mechanical Engineering and Mechanics, Nanjing, PEOPLES R CHINA, Web of Science.

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