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近二十年来机械阻抗技术在振动分析中获得广泛应用,领域遍及航空、航天和各种机械工程。本文力图根据我们的工作和国外资料对这一理论与试验相结合的工程振动分析方法作一较全面综合介绍。主要内容包括:机械阻抗的现代概念(各种激振情况下机械阻抗的描述,结构动力学中阻抗和导纳矩阵及其与模态分析的关系);稳态正弦和瞬态、随机机械阻抗测试技术;图解和计算机模态参数识别以及组合结构系统分析(包括动力特性、动力稳定性和动力响应)。
Nearly two decades of mechanical impedance technology in vibration analysis has been widely used in the field of aerospace, aerospace and various mechanical engineering. This article tries hard to make a comprehensive and comprehensive introduction to the engineering vibration analysis method combining this theory and experiment according to our work and foreign materials. The main contents include: modern concepts of mechanical impedance (description of mechanical impedance under various excitation conditions, impedance and admittance matrix in structural dynamics and their relation to modal analysis); steady-state sinusoidal and transient, stochastic mechanical impedance Test techniques; graphic and computer modal parameter identification and combined structural system analysis (including dynamic characteristics, dynamic stability and dynamic response).