journal article·2018-10Open access

A robustness analysis of the bonding process of joints in wind turbine blades

J. Spangenberg, A. Uzal, M.W. Nielsen, J.H. Hattel

Abstract

Abstract In this paper, a numerical model is used to perform a robustness analysis of the bonding process of a joint between the two shells composing a wind turbine blade. The flow behaviour of the bonding adhesive is quantified on a rheometer and the Herschel-Bulkley material model is utilized to approximate the rheological data set. The material model parameters are implemented in the numerical model, which is validated by comparison with experimental results. The robustness analysis is focused on analysing the adhesive position and initial shape as well as the inclination angle's effect on the squeeze force and final adhesive geometry. The results illustrate that the numerical model can assist in increasing the strength of the joint, decreasing the risk of residual stress induced cracks, and minimizing cost/waste and mass of the blade.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Manufacturing Process and Optimization · Metal Forming Simulation Techniques · Engineering Structural Analysis Methods

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (21)

Show source-provided references
1. Adhesives for bonding wind turbine blades10.1016/S0034-3617(09)70044-X ↗
2. Samborsky DD, Sears TA, John FM. , et al., Static and fatigue testing of thick adhesive joints for wind turbine blades. In: Proceedings of 47th AIAA aerospace sciences meeting including the new horizons forum and aerospace exposition, Orlando, Florida; 2009.10.2514/6.2009-1550 ↗
3. On the determination of yield surfaces in Herschel-Bulkley fluids10.1122/1.550992 ↗
4. An investigation of squeeze flow as a viable technique for determining the yield stress10.1007/s00397-009-0347-y ↗
5. Squeezing flow viscometry for nonelastic semiliquid foods - theory and applications10.1080/10408690290825547 ↗
6. Use of the parallel-plate plastometer for the characterisation of viscous fluids with a yield stress10.1016/0377-0257(81)80024-9 ↗
7. Squeeze flow of soft solids between rough surfaces10.1007/s00397-003-0311-1 ↗
8. Constant-force squeeze flow of soft solids10.1007/s00397-002-0241-3 ↗
9. Squeeze flow theory and applications to rheometry: a review10.1016/j.jnnfm.2005.08.007 ↗
10. Squeeze-flow of a Herschel–Bulkley fluid10.1016/S0377-0257(97)00099-2 ↗
11. Flow of soft solids squeezed between planar and spherical surfaces10.1007/s00397-005-0437-4 ↗
12. Squeezing flow of a highly viscous incompressivle liquid pressed between slightly inclined lubricated wide plates10.1007/s003970000123 ↗
13. Generalized analytical solution for compressive forces in adhesively-bonded-joint assembling10.1016/j.ijadhadh.2014.03.010 ↗
14. A finite element analysis of the squeeze flow of an e1asto-viscoplastic paste material10.1016/S0377-0257(96)01546-7 ↗
15. Transient squeeze flow of viscoplastic materials10.1016/j.jnnfm.2005.10.010 ↗
16. Flow induced particle migration in fresh concrete: theoretical frame, numerical simulations and experimental results on model fluids10.1016/j.cemconres.2012.01.007 ↗
17. Visualizing and simulating flow conditions in concrete form filling using pigments10.1016/j.conbuildmat.2013.08.027 ↗
18. Numerical simulations of concrete flow: a benchmark comparison10.1016/j.cemconres.2015.09.022 ↗
19. Volume of fluid (VOF) method for the dynamics of free boundaries10.1016/0021-9991(81)90145-5 ↗
20. Cellwise conservative unsplit advection for the volume of fluid method10.1016/j.jcp.2014.12.003 ↗
21. Uzal A, Spangenberg J, Nielsen MW, Sonne MR, Hattel JH. , Numerical modelling of the bonding process for wind turbine blades: model validation. In: Proceedings of the 21st international conference on composite materials (ICCM21); 2017.