失谐对耦合摆链结构振动特性的影响  

INFLUENCE OF MISTUNING ON VIBRATION CHARACTERISTICS OF COUPLED PENDULUM SYSTEM

作　　者：王斌[1] 程耿东[1] 王跃方[1] 

机构地区：[1]大连理工大学运载工程与力学学部工业装备结构分析国家中间实验室,大连116024

出　　处：《机械强度》2010年第2期175-181,共7页Journal of Mechanical Strength

基　　金：国家自然科学基金(10332010);国家创新研究团队计划(10421062);国家高技术研究发展计划(863计划;2007AA04Z405)资助项目~~

摘　　要：研究失谐对耦合摆链结构失谐后振动特性的影响。建立无量纲化的耦合摆链系统运动方程,采用振型分解法求解其动力响应。以5自由度和7自由度耦合摆链结构为例,分析耦合摆链结构的振动模态及在engine order形式的激振力下的动力响应。根据得到的结果,对系统由于失谐而出现的模态局部化、振动局部化、峰值分裂等现象及它们的联系进行深入讨论。The effects of mistuning on vibration characteristics of coupled pendulum system were studied.Using the mode decomposition method,the motion equations of the system in a dimensionless form were derived.As the example,the modes of vibration and the forced vibration responses excited by engine order excitation for a 5-DOF(degree of freedom) and a 7-DOF coupled pendulum system were analyzed.According to the results,the relations between the phenomenon of vibration mode localization and frequency response local...

关 键 词：循环周期结构 耦合摆链 失谐 ENGINE order 振型分解法 

分 类 号：O321[理学—一般力学与力学基础]