Numerical modelling of the bonding process for wind turbine blades: model validation

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Abstract

Adhesive is typically used in the joint between the two shells composing a wind turbine blade. Thebonding process of a blade can be characterized as a squeeze flow problem where the top shell is forcedtowards the bottom shell, resulting in a deformation in the adhesive. In this study, a 3-D numerical modelis developed in order to analyse adhesive propagation in squeeze flow problems with 3-D flow effects.The model is validated by comparison with an experiment where a rectangular prism shaped adhesivesample is squeezed between two parallel plates. In the numerical model the rheological behaviour of theadhesive is approximated with the Bingham material model. The numerical model is in good agreementwith the experimental results. In the future, the model will be used to optimize the bonding process ofwind turbine blades, save weight and reduce the levelized cost of energy.
Original languageEnglish
Publication date2017
Number of pages6
Publication statusPublished - 2017
Event21st International Conference on Composite Materials (ICCM-21) - Xi'an, China
Duration: 20 Aug 201725 Aug 2017

Conference

Conference21st International Conference on Composite Materials (ICCM-21)
CountryChina
CityXi'an
Period20/08/201725/08/2017

Keywords

  • Wind turbine blades
  • Adhesive joints
  • Squeeze flow
  • Bingham material model
  • Modelling

Cite this

Uzal, A., Spangenberg, J., W. Nielsen, M., Sonne, M. R., & Hattel, J. H. (2017). Numerical modelling of the bonding process for wind turbine blades: model validation. Paper presented at 21st International Conference on Composite Materials (ICCM-21), Xi'an, China.