吴锋   

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Paper Publications

Title of Paper:基于祖冲之类方法的多体动力学方程保能量保约束积分

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Date of Publication:2014-02-28

Journal:计算机辅助工程

Volume:23

Issue:1

Page Number:64-68,75

ISSN No.:1006-0871

Key Words:多体动力学方程;微分-代数方程;保辛;祖冲之

Abstract:针对一类多体动力学问题导出的微分-代数方程,提出一种保能量、保约束的算法.该算法基于祖冲之类方法和欧拉中点保辛差分,利用祖冲之类方法保证在时间格点上精确满足约束方程,避免约束违约问题;并进一步证明该算法在时间格点上可以精确保能量.数值算例进一步验证该算法的可靠性.

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