• Vibration monitoring development • Condition monitoring basic concept • Vibration monitoring details onsite vibration monitoring sensors vibration monitoring example vibration monitoring process Notes to vibration measurement Digital signal processing(DSP) to vibration analysis
结构被动调谐减震控制概述 Introduction to passive tuned vibration control 单质点结构被动调谐减震控制 Passive tuned vibration control of SDOF system 多质点结构被动调谐减震控制 Passive tuned vibration control of MDOF system 结构被动调谐减震控制的工程应用 Applications of passive tuned vibration control in civil engineering
5.1 结构主动减震控制概述 Introduction to active structural vibration control 5.2 结构主动减震机理和系统组成 The mechanism of active control of structure and system components 5.3 主动控制算法 active control algorithm
Lecture D33: Forced Vibration Fosinwt m Spring Force Fs =-kx, k>0 Dashpot Fd =-ci, c>0 Forcing Fext Fo sin wt Newton's Second Law (mix =CF) mx+cx+kx= Fo sin wt =k/m,=c/(2mwn)
§14-4 Damped Vibration& Forced Vibration Resonance 阻尼振动 受迫振动 共振 §14-5 Superposition of two SHM with same Frequency in same Direction 同方向同頻率的简谐振动的合成 §14-6 Superposition of two Perpendicular SHM 相互垂直的简谐振动的合成 §14-3 The Energy of SHM 简谐振动的能量 §14-2 Amplitude Period Frequency & Phase 简谐振动的振幅, 周期，頻率和位相 §14-1 Simple Harmonic Motion (SHM) 简谐振动
Lecture D32: Damped Free Vibration Spring-Dashpot-Mass System k Spring Force Fs =-kx, k>0 Dashpot Fd =-cx, c>0 Newton's Second Law (mx =EF) mx +cx+kx (Define)Natural Frequency wn=k/m,and
11.1 结构的风振响应的运动方程 11.1 the equation of motion of structure under fluctuating wind 11.2 结构的风振响应的时程分析 11.2 time-history analysis of the equation of motion 11.3 顺风向随机风振响应的频域分析 11.3 frequency domain analysis of vibration response of
General comments on generalized SDOF Generalized properties: assemblages of rigid bodies Generalized properties: distributed flexibility Vibration analysis by Rayleigh’s method Selection of the Rayleigh’s vibration shape
Response of SDOF to harmonic excitation: application • Identify the natural frequency and damping ratio • Vibration measurements • Earthquake Isolation • Vibration Isolation Response of SDOF to periodic excitation
