噪声与振动控制2017，Vol.37Issue(3)：1-6,6.DOI:10.3969/j.issn.1006-1355.2017.03.001
基于连接特性识别的子结构综合法
An Improved Substructure Synthesis Method Based on the Identification of Joint Characteristics
摘要
Abstract
Substructure synthesis method is widely used in the calculation of multi-unit system for its block calculation characteristics. However, there is a lack of systematic analysis for the joints of the substructures. Since the joints are usually complex and have a great influence on the dynamic performance of the whole system, they will reduce the accuracy of the computation results of the traditional mechanical admittance method. In this article, the concept of virtual impedance is proposed, the effect of the joint element between substructures of the system is introduced by using the virtual impendence matrix into the comprehensive calculation. The performance of the joint elements can be obtained by reciprocal formulation according to the frequency response characteristics of the system elements and the sub-elements. The computation accuracy of this method is verified by the models of discrete and elastic continuous elements. Finally, this method is applied to the prediction of dynamic characteristics of milling tools. It is concluded that the proposed method is more accurate than the traditional one by comparing the results with the measurement results.关键词
振动与波/子结构综合法/连接/阻抗辨识/铣刀动特性Key words
vibration and wave/substructure synthesis method/joint/virtual impendence identify/dynamic characteristics of milling tools分类
机械制造引用本文复制引用
李志深,周华,李鸿光..基于连接特性识别的子结构综合法[J].噪声与振动控制,2017,37(3):1-6,6.基金项目
国家自然科学基金资助项目(1142780054) （1142780054）
