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充液飞行器多频运动模式下燃料晃动的全局分岔行为 被引量:1

GLOBAL BIFURCATION OF LIQUID SLOSHING IN MULTI-FREQUENCY MOTION MODEL
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摘要 建立充液飞行器多频运动模式下液体燃料晃动方程,利用Melnikov方法对其全局动力学行为进行分析,得到系统不同参数下异宿分岔和次谐分岔的阈值,确定混沌运动产生的机理。同时,通过对系统模型的非线性系数与充液深度之间关系的分析,发现系统存在一"充液转换点",使得系统的全局动力学行为发生巨大改变,需引起重视。 Sloshing equations for an aircraft filled with liquid and for multi-frequency motion model are established.By Melnikov method,the global dynamic behaviors of the system are studied,and threshold values of heteroclinic bifurcation and sub-harmonic bifurcation are obtained.Meanwhile,through analyzing relationship between nonlinear parameter and depth of liquid,it is found that there exists a 'switch point' for the system,which makes the global dynamics of the system greatly change.This change must be paid attention to.
作者 钟顺 陈予恕
出处 《机械强度》 CAS CSCD 北大核心 2011年第6期791-796,共6页 Journal of Mechanical Strength
基金 国家自然科学基金重点项目(10632040) 天津市自然基金重点项目(09JCZDJC26800)资助~~
关键词 多频运动 全局分岔 充液转换点 Multi-frequency motion Global bifurcation Switch point
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