Vibration characteristics of a large wind turbine tower on non-rigid foundations | Zendy

S. T. Yee | Zendy; T. Y. P. Cang | Zendy; R. J. Scavuzzo | Zendy; D. H. Timmerman | Zendy; J. W. Fenton | Zendy

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Vibration characteristics of a large wind turbine tower on non-rigid foundations

Author(s) -

S. T. Yee,

T. Y. P. Cang,

R. J. Scavuzzo,

D. H. Timmerman,

J. W. Fenton

Publication year - 1977

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/7105683

Subject(s) - foundation (evidence) , tower , turbine , vibration , rotation (mathematics) , bedrock , geotechnical engineering , structural engineering , geology , natural frequency , engineering , marine engineering , physics , aerospace engineering , acoustics , geometry , mathematics , geomorphology , geography , archaeology

Vibration characteristics of the Mod-OA wind turbine supported by non-rigid foundations were investigated for a range of soil rigidities. The study shows that the influence of foundation rotation on the fundamental frequency of the wind turbine is quite significant for cohesive soils or loose sand. The reduction in natural frequency can be greater than 20 percent. However, for a foundation resting on well graded, dense granular materials or bedrock, such effect is small and the foundation can be treated as a fixed base.

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