Dynamic Reliability of Offshore Wind Turbine Tower Systems

Due to the aerodynamic effects on rotating blades and wave action on the tower, the offshore wind turbine tower system is actually a high-dimensional, time-variant, nonlinear system. With the increase of their size, the safety and serviceability of offshore wind turbines become increasingly important. Generally, evaluation of the global reliability of such systems - which involves high-dimensional, nonlinear. stochastic dynamics - is still a great challenge. In the present paper, a simplified integrated multi-degree-of-freedom model which characterizes the rotation of blades and the aerodynamics of blades is adopted. The probability density evolution method (PDEM) is then employed to evaluate the global reliability when the randomness of wind is involved. The example shows that it is feasible to design a complex structure exhibiting nonlinearity subjected to concurrent external dynamic excitations based on the global reliability.

Language

  • English

Media Info

  • Media Type: Web
  • Pagination: pp 937-947
  • Monograph Title: Vulnerability, Uncertainty, and Risk: Quantification, Mitigation, and Management

Subject/Index Terms

Filing Info

  • Accession Number: 01532704
  • Record Type: Publication
  • ISBN: 9780784413609
  • Files: TRIS, ASCE
  • Created Date: Jul 7 2014 3:01PM