Simulation-Based Time-Dependent Reliability Analysis for Composite Hydrokinetic Turbine BladesStructural and Multidisciplinary Optimization
AbstractThe reliability of blades is vital to the system reliability of a hydrokinetic turbine. A time-dependent reliability analysis methodology is developed for river-based composite hydrokinetic turbine blades. Coupled with the blade element momentum theory, finite element analysis is used to establish the responses (limit-state functions) for the failure indicator of the Tsai-Hill failure criterion and blade deflections. The stochastic polynomial chaos expansion method is adopted to approximate the limit-state functions. The uncertainties considered include those in river flow velocity and composite material properties. The probabilities of failure for the two failure modes are calculated by means of time-dependent reliability analysis with joint upcrossing rates. A design example for the Missouri river is studied, and the probabilities of failure are obtained for a given period of operation time.
Department(s)Mechanical and Aerospace Engineering
Document TypeArticle - Journal
Rights© 2013 Springer Verlag, All rights reserved.
Citation InformationZhen Hu, Haifeng Li, Xiaoping Du and K. Chandrashekhara. "Simulation-Based Time-Dependent Reliability Analysis for Composite Hydrokinetic Turbine Blades" Structural and Multidisciplinary Optimization (2013)
Available at: http://works.bepress.com/xiaoping-du/80/