教師資料查詢 | 類別: 期刊論文 | 教師: 張德文 CHANG DER-WEN (瀏覽個人網頁)

標題: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
語言英文
ISSN0267-7261
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
國別英國
公開徵稿
出版型式紙本
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