Modeling multiple failures of composite box beams used in wind turbine blades
| Autor: | Ke Yang, Xiao Chen, Jing Tang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Turbine blade Composite number Competing failure mechanisms 02 engineering and technology law.invention Stress (mechanics) Foam crushing 0203 mechanical engineering Debonding law Shear stress Material failure theory Civil and Structural Engineering business.industry Delamination Structural engineering 021001 nanoscience & nanotechnology Finite element method Fracture 020303 mechanical engineering & transports Ceramics and Composites Fracture (geology) Progressive failure Shear nonlinearity 0210 nano-technology business |
| Zdroj: | Chen, X, Tang, J & Yang, K 2019, ' Modeling multiple failures of composite box beams used in wind turbine blades ', Composite Structures, vol. 217, pp. 130-142 . https://doi.org/10.1016/j.compstruct.2019.03.018 |
| ISSN: | 0263-8223 |
| DOI: | 10.1016/j.compstruct.2019.03.018 |
| Popis: | Large composite structures, such as composite wind turbine blades, may exhibit multiple failure modes that challenge the modeling strategies and methodologies designers adopt in finite element (FE) analysis. This study develops a comprehensive and general FE modeling method to simulate interactive failure process of composite box beams used in wind turbine blades. The composite box beams are the primary loading-carrying members and could show different failure modes due to competing failure mechanisms. A continuum-damage mechanics based progressive failure analysis approach is developed in three-dimensional stress/strain domain to simulate failure behavior of the box beams. Structural nonlinearities associated with geometry, materials and contact are included. The material failures considered in this study are composite failure with three material failure modes, foam core crushing and adhesive failure . The in-plane shear stress versus strain relation of unidirectional composites is included in the material damage model. Comprehensive comparisons are made between numerical simulations and experimental observations with respect to strain response, ultimate loads, failure modes and failure progress. The modeling approach is found to be capable of predicting both strength and failure of box beams with reasonable accuracy and it exhibits great potential to predict failure response of composite wind turbine blades. |
| Databáze: | OpenAIRE |
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