Title: Assessing Mechanical-Adhesive Hybrid Joints for Segmented Wind Turbine Blades: A Parametric Study using Simulation Methods

Authors: Muhammad Basit Ansari, Vincent Maes, Terence Macquart, Byung Chul Kim, Alberto Pirrera

DOI: 10.33599/nasampe/s.24.0079

Abstract: Wind turbine manufacturers are continuously pushing for larger rotor diameters to capture more wind and generate energy cost-effectively. As the dimensions of rotor blades increase, their manufacturing, transportation, and installation become progressively more intricate, time-consuming, and costly. A potential solution lies in spanwise segmentation. Nevertheless, available segmented blade technologies are still relatively immature, have drawbacks, and are yet to be used for blades longer than 80 m. A major challenge with segmented blades lies in the addition of joints, which can lead to structural and aeroelastic disadvantages when compared to monolithic designs. In this study, we investigate the potential and initial feasibility of an adhesively bonded snap-fit joint for segmenting a reference 10 MW wind turbine blade. Using finite element analysis under quasi-static loading conditions, the snap-fit joint is sized and parametrically assessed, evaluating the forces needed for assembly and its ability to transfer operational loads. The results demonstrate the joint’s capability to transmit axial loads up to around 15.4 MN, successfully meeting the design requirements and validating its initial feasibility in accordance with the study’s primary objective.

References: 1.Peeters, M., Santo, G., Degroote, J. & Paepegem, W. ""The Concept of Segmented Wind Turbine Blades: A Review"". Energies (Basel) 10, 1112 (2017). 2.Saraswati, N., Bakhmet, I., Nijssen, R., Ernst, R. & van der Mijle Meijer, H. “Sustainable designs for Wind Turbine Blades”. (2020). 3.""Repowering gives wind farms a lease of life"". 10 Jan. 2024 >https://iberdrola.ft.com/repowering-gives-wind-farms-a-new-lease-of-life< 4.""The US’s $25 billion per year Repowering Opportunity"". 10 Jan. 2024 >https://www.windesco.com/blog/the-uss-25-billion-per-year-repowering-opportunity< 5.""Wood Mackenzie | Energy Research & Consultancy"". 10 Jan 2024 >https://www.woodmac.com/< 6.Dutton, A. et al. “Design, Structural Testing, and Cost Effectiveness of Sectional Wind turbine Blades”. (2001). 7.Nijssen, R. P. L., De Ruiter, M. J., Lahuerta, F. & Kuipers, E. ""Connection methods in wind turbine rotor blades"". (2018). 8.""Segmentation technology for large onshore blades"". in IQPC conference:Advances in Rotor Blades for Wind Turbines (2014). 9.Rohden, R. ""Rotor blade for a wind energy installation"". Patent: WO 2007/131937 A1. (2007). 10.Pedersen, B. H., De La Rua, I., Rodriguez, R., Pascual, S., & Savii, R. ""Sensorised Blade Joint"". International Journal of Pharmaceutics (2009). 11.Yarbrough. ""Joint assembly for a wind turbine rotor blade"". Patent: US 10,563,636 B2. (2020). 12.Mendoza, A. S. E., Yao, S., Chetan, M. & Griffith, D. T. ""Design and analysis of a segmented blade for a 50 MW wind turbine rotor"". Wind Engineering (2022). 13.Yuste, M. ""System for joining component portions of wind turbine blades"". Patent: EP 2 708 735 A1. (2012). 14.Gonzalez, L. et al. ""Blade for wind-power generator formed by attaching multiple independent sections utilizing connection means at the end of sections"". (2013). 15.Saenz, E., Nuin, I., Montejo, R. & Sanz, J. ""Development and validation of a new joint system for sectional blades"". Wind Energy 18, 419–28 (2015). 16.Hoffmann, A., Dulle, D., & Clemens, C. ""Rotor Blade Tip"". Patent: US 2016/0090963 A1. (2016). 17.Bech, A. ""Wind blades made of two sections, and assembly method"". Patent: US 8,348,622 B2. (2013). 18.Zirin, R., Ling, W., Zhou, Y. et al. ""Multi-Segment Wind Turbine Blade and Method for Assembling the Same"". Patent: US 7,740,453 B2. (2013). 19.Owens, C., Hunter, R., Barton, L. ""Modular wind turbine blade and associated method of manufacture"". vol. 18 (2021). 20.Arelt, R. ""Method for Producing a Rotor blade"". Patent:US 7,334,989 B2. (2008). 21.Hibbard, P. ""Sectional blade-Vestas"". Patent: US 8,777,573 B2. (2016). 22.Loth, E., Selig, M. & Moriarty, P. ""Morphing Segmented Wind Turbine Concept"". in 28th AIAA Applied Aerodynamics Conference (2010). doi:10.2514/6.2010-4400. 23.Sá, M. F., Correia, J. R., Silvestre, N. & Gomes, A. M. ""Transverse bending and in-plane shear behaviours of multicellular pultruded GFRP deck panels with snap-fit connections"". Thin-Walled Structures 154, (2020). 24.Christian, B., Frederik, Z., Robert, B., Taeseong, K., Anders, Y. et al. Description of the DTU 10 MW Reference Wind Turbine. (2013). 25.Scott, S., Macquart, T., Rodriguez, C., Greeves, P., McKeever, P., Weaver, P. & Pirrera, A. ""Preliminary validation of ATOM: an aero-servo-elastic design tool for next generation wind turbines"". iopscience.iop.org. 26.Messler, R. W. ""Plastic (Formed-in) Integral Mechanical Attachments or Interlocks"". Integral Mechanical Attachment 143–64 (2006). 27.Bonenberger, P. R. “The First Snap-Fit Handbook”. (2005). 28.Spahr, T. ""Snap fits for assembly and dissasemmbly"". (1991). 29.Oskouei, R. H., Keikhosravy, M. & Soutis, C. ""A finite element stress analysis of aircraft bolted joints loaded in tension"". Aeronautical Journal 114, 315–20 (2010). 30.NPL. ""Manual for the Calculation of Elastic-Plastic Materials Models Parameters"". National Physics Laboratory 49. (2007). 31.Smith, M. ABAQUS User’s Manual, Version 6.9. (Dassault Systèmes Corp). 32.Koloor, S. S., Khosravani, M. R., Hamzah, R. I. R. & Tamin, M. N. ""FE model-based construction and progressive damage processes of FRP composite laminates with different manufacturing processes"". Int J Mech Sci 141, 223–35 (2018). 33.""Coefficient of Friction Equation and Table Chart"". 10 Jan. 2024 >https://www.engineersedge.com/coeffients_of_friction.htm< 34.Yu, S., Zhang, Z., Wang, Q., Ren, M. & Jia, H. ""Study on wear resistance of local aluminum alloy reinforced by carbon fiber transfer membrane region"". Journal of Materials Research and Technology 23, 5772–82 (2023).

Conference: SAMPE 2024

Publication Date: 2024/05/20

SKU: TP24-0000000079

Pages: 34

Price: $68.00