Contents 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 闺 土本2程学院Contents  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