Refined tower mass coefficient for natural frequency of offshore wind turbines with SSI and P--Δ
 
Yazarlar (2)
Dr. Öğr. Üyesi Abdullah Kürşat DEMİR Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Can Elmar Balas Tokat Gaziosmanpaşa Üniversitesi
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı SOIL DYNAMICS AND EARTHQUAKE ENGINEERING (Q1)
Dergi ISSN 0267-7261 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler
Makale Dili İngilizce Basım Tarihi 04-2026
Cilt / Sayı / Sayfa 203 / 0 / 110118–0 DOI 10.1016/j.soildyn.2026.110118
Makale Linki https://doi.org/10.1016/j.soildyn.2026.110118
Özet
One of the most critical aspects in the dynamic design of offshore wind turbines is the accurate determination of the first natural frequency. A key factor in this analysis is the inclusion of the tower mass in the dynamic model through appropriate mass-participation coefficients. In previous studies, these coefficients were derived under similar assumptions and have typically shown close numerical values. In the present study, the proposed coefficient differs by approximately 8–12 % from those reported in the literature and has been validated using data from turbines with various rated capacities, ranging from early designs to modern large-scale systems. The analysis further demonstrates that, when soil effects are considered, this coefficient should not be treated as a constant but rather as a function of soil stiffness and foundation displacement. Additionally, the influence of increasing rotor diameters—associated with …
Anahtar Kelimeler
Additional index words: | Offshore wind turbine | Natural frequency analysis | Tower mass coefficient | Soil-structure interaction | Nonlinearity effects | Dynamic response