A Time-Domain Viscous Damping Model Based on Frequency-Dependent Damping Ratios
學年 89
學期 1
出版（發表）日期 2000-12-01
作品名稱 A Time-Domain Viscous Damping Model Based on Frequency-Dependent Damping Ratios
作品名稱（其他語言）
著者 Chang, D. W.; Roesset, J. M.; Wen, C. H.
單位 淡江大學土木工程學系
出版者 Kidlington: Pergamon
著錄名稱、卷期、頁數 Soil Dynamics and Earthquake Engineering 19(8), pp.551-558
摘要 This paper introduces the mathematics and procedures used in developing a time-dependent damping model for integration analyses of structural response. To establish the time-dependent viscous damping model, frequency-dependent damping ratios of the structure under a series of steady-state unit impulses corresponding to actual loads are first calculated. For simplicity, the ratios can be incorporated with the static stiffness of the structure to model approximately the impulse induced damping spectrum. According to the nature of the problem, these ratios can be calculated from the theoretical impedance functions and experimental observations. With the computed damping spectrum, the damping coefficient in the time domain can be obtained with the Fourier transform technique. Adopting the impulse–response method, the damping can be modeled rationally through integration with changing loads. Numerical examples are presented to show the feasibility of this model while the transform criterion is satisfied.
關鍵字 Time-domain integration; Damping coefficient; Fourier transform; Impulse–response method; Equivalent damping ratios; Impedance functions
語言 en
ISSN 0267-7261
期刊性質 國外
收錄於 EI SCI
產學合作
通訊作者 Chang, Der-Wen
審稿制度
國別 GBR
公開徵稿
出版型式 紙本
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