Dynamic characteristics analysis for support structure of an offshore wind turbine

作者：Chen, Qian; Fu, Shi Xiao; Zou, Zao Jian

来源：Journal of Vibration and Shock, 2012, 31(2): 86-90.

• Calculation models
• Dynamic characteristics analysis
• Euler-bernoulli beam models
• Finite element software
• Higher-order
• Support structures

Euler-Bernoulli beam model was taken to simulate support structure of an offshore wind turbine. The universal finite element software ANSYS was adopted to establish the calculation model of the support structure. Based on the model, the influences of the upper structure mass (including rotor, engine, etc) of the wind turbine, the whole wind turbine gravity and seawater on the support structure';s natural frequencies were analyzed. The dynamic response of the support structure under a transient shock was computed. The results showed that the upper structure mass should be taken into account, but the gravity of the wind turbine can be ignored when calculating the natural frequencies of the support structure; the influence of seawater is great when considering the higher order natural frequencies of the support structure; and the upper structure mass makes the response of the support structure more steady under a transient shock.

• 出版日期2012
• 单位上海交通大学