Dynamic Characteristics of TMD Based on DDMF and ADMF

Abstract

Abstract: The research is carried out on the sensitivity in the TMD dynamic characteristics to the structural modal participation factor in an attempt to design TMD for MDOF structure directly using the optimum parameters of TMD for SDOF structure. The displacement and acceleration dynamic magnification factors (i.e. DDMF and ADMF) of the SDOF structure with TMD are defined and their explicit formulas are derived in the case of considering the structural modal participation factor. The criteria for the optimum searching are then the minimization of the minimum values of the maximum displacement and acceleration dynamic magnification factors (i.e. Min.Min.Max.DDMF and Min.Min.Max.ADMF). In light of the criteria, numerical results for the optimum parameters and effectiveness of TMD with respect to the different structural modal participation factors are presented and evaluated. And, a designer can now easily determine the TMD parameters for an MDOF structure.

Key words: vibration control, tuned mass damper (TMD), sensitivity, structural modal participation factor, Min.Min.Max.DDMF, Min.Min.Max.ADMF, ground acceleration

LI Chun-Xiang. Dynamic Characteristics of TMD Based on DDMF and ADMF[J]. journal6, 2002, 23(3): 6-15.

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