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A two degree of freedom model for the dynamics of offshore structures
Author(s) -
Taylor R. Eatock
Publication year - 1978
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.4290060402
Subject(s) - idealization , spring (device) , dynamics (music) , range (aeronautics) , structural engineering , simple (philosophy) , degree (music) , engineering , classical mechanics , physics , mechanics , aerospace engineering , acoustics , philosophy , epistemology
As a means towards an understanding of the structural dynamics of deepwater gravity platforms, the dynamic response of a linear two degree of freedom spring‐mass‐damper system is studied herein. The mathematical model represents dynamic interaction between structure and foundation. Particular attention is paid to the influence of wave force distribution. Transfer functions are obtained for the response to sinusoidal waves, and resonant magnification factors are plotted for a range of structural and loading parameters. It is concluded that the response even of this simple idealization is far from straightforward.