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Power and Energy Engineering Conference (PEEC 2010 E-BOOK)

Wuhan,China,9.11-9.13，2010

ISBN: 978-1-935068-17-4 Scientific Research Publishing, USA

E-Book 846pp Pub. Date: October 2010

Category: Engineering

Price: $80

Title: Stability Failure Mechanism to Offshore Wind Turbine Tower
Source: Power and Energy Engineering Conference (PEEC 2010 E-BOOK) (pp 63-67)
Author(s): Xiaohui Dong, Yancheng Institute of Technology, Yancheng, China
Shucong Zhen, Yancheng Institute of Technology, Yancheng, China
Abstract: By the analysis on factors causing offshore wind turbine tower unstable failure, the tower fatigue damage unstable mechanism was explained from the viewpoint of energy. As viewed from damage mechanics, combining with residual strength formula of fracture mechanics, according to residual strength decay model proposed by Schaff, elastic modulus calculation model of tower material was deduced. On this basis, using the unit load method, formula of deflection amplitude variation regular in the top of tower is given on the stiffness decay condition. At last, the tower buckling failure mechanism was analyzed. Reference was provided to avoid or reduce instability of offshore wind turbine tower.
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