ABSTRACT
Gouttebroze 2002) and Stochastic Subspace Identification (Ren and Zong 2004). Sensitivity-based model updating method for damping identification with vibration measurements belongs to another category (Kang et al. 2005). Traditional modalbased method is difficult to identify the damping of the high frequency modes because these modes are difficult to excite. Kang et al. (2005) used the Rayleigh damping and the two coefficients were identified from acceleration responses with optimization methods. Li and Law (2009) conducted the identification of damping ratios based on the sensitivity of acceleration response and model updating technique, and performed a numerical study on a five-bay frame structure to investigate the effectiveness and validity of the sensitivity-based model updating method. Responses with 10% measurement noise were used in the identification analysis and structural local damage was considered.
