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Section of a wind turbine blade showing the internal main spar

This and the next 3 slides are from:

Jensen FM (Riso National Laboratory, Roskilde), “Compression strength of a fibre composite main spar in a wind turbine blade”, Risø-R-1391(EN) ISBN 87-550-3184-6; ISBN 87-550-3185-4 (Internet) ISSN 0105-2840, June 2003

ABSTRACT: In this report the strength of a wind turbine blade is found and compared with a full-scale test, made in the same project. Especially the postbuckling behaviour of the compression flange is studied. Different compressive failure mechanisms are discussed and the limitations in using the Finite Element Method. A suggestion to the further work is made.

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