复杂机械振动系统多维耦合路径传递性的研究与应用

项目名称： 复杂机械振动系统多维耦合路径传递性的研究与应用

项目编号： No.51305072

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 机械、仪表工业

项目作者： 赵薇

作者单位： 东北大学

项目金额： 25万元

中文摘要： 对于复杂机械振动系统，多振动源通过耦合动力传递路径对其进行激励，各路径对振动响应的贡献度、路径之间的传递耦合性以及路径传递的随机特性直接决定着接受体响应的动态特性，综合构成系统路径的传递性。研究振动路径的传递性, 并以此对系统传递路径进行动态优化设计，优化振动系统的动态响应特性，提高振动系统的高效性和经济性，对多体振动机械系统的设计、应用具有重要的理论及实际工程应用价值。本项目拟建立具有多维耦合路径的振动传递路径系统动力学模型，从振源、传递路径和接受结构之间的交互作用方面对振动传递路径的传递性进行研究。提出有效的评价方法，定量分析系统各传递路径及路径参数对系统接受体动态输出特性的贡献度；根据振动传递路径的随机性，研究参数随机变化使系统产生共振失效的传递可靠性问题；探讨多路径多参数耦合变化对系统动态响应的影响指数，揭示各传递路径之间的耦合特性，为机械振动系统的动力学优化设计提供理论依据。

中文关键词： 振动传递路径；传递性；贡献度；耦合性；传递可靠度

英文摘要： For complex mechanical vibration system，the incentives are received from the multi - source of vibration through a variety of coupling transfer path . The response characteristics of receiving body are directly determined by the path contribution to vibration response , the coupling between transfer paths and the random nature of transfer paths ,which constitute the transitivity of vibration transfer paths . Studying the transitivity of vibration paths and optimizing the dynamic response characteristics of vibration system to improve the efficiency and economy of the vibration system will have important engineering value for the design theory and system optimization method of multi-body mechanical vibration system. The project intends to establish the dynamics model of vibration transfer path system with multidimensional coupling paths and research the transitivity of transfer path system from the interaction among vibration source, transfer path and receiving object.We will proposal effective evaluating method and analyze quantitatively the contribution of vibration transfer path and path parameters to characteristics of system vibration response. Considering that The randomness of vibration transfer path is crucial to the system stable, we will research the resonance failure due to the random chang

英文关键词： vibration transfer path；transmission；contribution；coupling property；transfer reliability