Pultrusion of a vertical axis wind turbine blade part-I: 3D thermo-chemical process simulation

Ismet Baran, Cem Celal Tutum, Jesper Henri Hattel, Remko Akkerman

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

novel three dimensional thermo-chemical simulation of the pultrusion process is presented. A simulation is performed for the pultrusion of a NACA0018 blade profile having a curved geometry, as a part of the DeepWind project. The finite element/nodal control volume (FE/NCV) technique is used. First, a pultrusion simulation of a Ushaped composite profile is performed to validate the model and it is found that the obtained cure degree profiles match with those given in the literature. Subsequently, the pultrusion process simulation of the NACA0018 profile is performed. The evolutions of the temperature and cure degree distributions are predicted inside the heating die and in the post-die region where convective cooling prevails. The effects of varying process conditions on the part quality are investigated for two different heater configurations and with three different pulling speeds. Larger throughthickness gradients are obtained for the temperature and degree of cure as the pulling speed increases. This will affect the process induced residual stresses and distortions during manufacturing.
Original languageEnglish
JournalInternational Journal of Material Forming
Volume8
Pages (from-to)379-389
ISSN1960-6206
DOIs
Publication statusPublished - 2015

Keywords

  • Pultrusion process
  • Curing
  • Finite element analysis
  • NACA0018 airfoil
  • Thermosetting resin

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