Finite element analysis with an improved failure criterion for composite wind turbine blades |
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| Authors: | J Selwin Rajadurai T Christopher G Thanigaiyarasu B Nageswara Rao |
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| Affiliation: | (1) Faculty of Mechanical Engineering, Government College of Engineering, 627 007 Tirunelveli, India;(2) Faculty of Mechanical Engineering, Anna University, 600 025 Chennai, India;(3) Structural Analysis and Testing Group, Vikram Sarabhai Space Centre, 695 022 Trivandrum, India |
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| Abstract: | Some interesting studies are made in this paper on the life management of a composite wind turbine
blade. It presents the details of finite element modeling and validation, blade response under service
loading conditions, power coefficient evaluation for the optimum design parameters of the blade configuration,
development of failure envelope and fatigue life estimations. Finite element analysis results are found
to be in good agreement with existing test results on a typical composite blade configuration. The
failure envelope generated from the present modified failure criterion correlates well with the test results
on different composite materials. The procedure adopted in this paper can be utilized for optimum design
of large size composite wind turbine blades. |
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