ANALYSIS OF SEISMIC RESPONSE OF WIND TURBINE TOWER USING IDA METHOD

摘要：

Incremental dynamic analysis (IDA) is employed in FEM evaluation of the seismic response of a hypothetical wind turbine tower. The tower is simulated by shell elements and a bilinear elastic-perfectly plastic constitutive relationship is assumed. With the spectral acceleration as intensity measure (IM), four ground motion records (El Centro, Kobe, Northridge and Tian-jin earthquakes) and three damage measures (DM), which include the maximum displacement at the top of the tower (MD), the maximum acceleration at the top of the tower (MC) and the maximum bending moment at the base of the tower (MBM), are considered in the FEM (Finite Element Method) simulation. The results indicate that the IDA curves behave linearly on the whole. But IDAs with the MBM as DM exhibit apparent nonlinearity and a typical hardening effect can be observed when the tower is excited by El Centro record.

关键词： IDA wind turbine tower seismic response

作者: Y. Z. Xu

作者单位: Department of Building Engineering, Tongji University, Shanghai, China

会议类型: 国际会议

会议名称: 2007年土木工程结构创新与可持续发展国际会议(The International Symposium on Innovation & Sustainability of Structures in Civil Engineering)

会议地点: 上海

会议语种:英文

页码: 1046-1052

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）