Analysis and design improvement of composite bolted π-joints under bending load

Abstract

A 3D progressive model with better convergence property is established to capture the mechanical properties and damage mechanism of a composite bolted π-joint under bending load and shown to closely match experimental results. This model is then used to investigate the effect of internal laminate stacking sequence and surface layers thickness on the bending performance of the joint. It was found that the stacking sequence and the surface layers thickness have a significant effect on the matrix crack and delamination distributions in the joint, respectively. Local surface layer thickness can be designed to control the delamination damage around the bolt hole. Finally, volume fraction of 0° layer in the internal laminate and surface layer thickness are used to improve the joint bending performances by proper design.

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References

  1. 1.

    Li X, Cheng X, Guo X, Liu S, Wang Z (2020) Tensile properties of a hybrid bonded/bolted joint: parameter study. Compos Struct 245:112329

    Article  Google Scholar 

  2. 2.

    Abdus S, Cheng X, Huang W, Ahmed A, Hu R (2019) Bearing failure and influence factors analysis of metal-to-composite bolted joints at high temperature. J Braz Soc Mech Sci Eng 41(7):298

    Article  Google Scholar 

  3. 3.

    Butler B (2000) Composites affordability initiative. Paper presented at the 41st AIAA structures, structural dynamics and materials conference, Atlanta, GA, USA, April

  4. 4.

    Engelstad S, Berry O, Renieri G, Deobald L, Mabson G, Dopker B, Nottorf E, Clay S (2005) A high fidelity composite bonded joint analysis validation study-part I: analysis. Paper presented at the 46th AIAA structures, structural dynamics and materials conference, TX, USA, April

  5. 5.

    Lua J, Flansburg B, Engelstad S (2009) XFEM toolkit for delamination failure prediction of composite bonded PI joints. Paper presented at the 50th AIAA structures, structural dynamics and materials conference, Palm Springs, CA, USA, May

  6. 6.

    Gu H, Wanthal S (2010) Progressive failure analysis of composite pi joint. Paper presented at the 51th AIAA structures, structural dynamics and materials conference, Florida, USA, April

  7. 7.

    Ji W, Waas A, Raveendra R (2012) Progressive failure analysis method of a Pi joint with uncertainties in fracture properties. Paper presented at the 53th AIAA structures, structural dynamics and materials conference, Hawaii, USA, April

  8. 8.

    Morrison A, Garnich M, Fertig RS (2017) Reliability analysis of a woven composite Pi-joint structure. J Compos Mater 51(29):4101–4114

    Article  Google Scholar 

  9. 9.

    Shenoi RA, Hawkins GL (1992) Influence of material and geometry variations on the behaviour of bonded tee connections in FRP ships. Composites 23(5):335–345

    Article  Google Scholar 

  10. 10.

    Dharmawan F, Thomson RS, Li H, Herszberg I, Gellert E (2004) Geometry and damage effects in a composite marine T-joint. Compos Struct 66(1–4):181–187

    Article  Google Scholar 

  11. 11.

    Burns LA, Mouritz AP, Pook D, Feih S (2012) Strength improvement to composite T-joints under bending through bio-inspired design. Compos Part A 43(11):1971–1980

    Article  Google Scholar 

  12. 12.

    Burns L, Mouritz AP, Pook D, Feih S (2016) Strengthening of composite T-joints using novel ply design approaches. Compos Part B 88:73–84

    Article  Google Scholar 

  13. 13.

    Fu Y, Zhang J, Zhao L (2013) Strength prediction of composite joint under bending load and study of geometric and material variations effects. J Compos Mater 47(8):1029–1038

    Article  Google Scholar 

  14. 14.

    Sebastian C, Haq M, Patterson E (2017) Analysis of a composite Pi/T-joint using an FE model and DIC. In: Joining technologies for composites and dissimilar materials, vol 10. Springer, pp 11–19

  15. 15.

    Engelstad S, Mollenhauer D, Berry O, Colleary A (2004) Comparisons of measured moire fringe surface strains and model predictions for a co-bonded pi-preform composite tee joint. Paper presented at the 45st AIAA structures, structural dynamics and materials conference, Palm Springs, CA, USA, April

  16. 16.

    Flansburg B, Engelstad S, Lua J (2009) Robust design of composite bonded pi joints. Paper presented at the 50st AIAA structures, structural dynamics and materials conference, Palm Springs, CA, USA, May

  17. 17.

    Tserpes KI, Pantelakis S, Kappatos V (2011) The effect of imperfect bonding on the pull-out behavior of non-crimp fabric Pi-shaped joints. Comput Mater Sci 50(4):1372–1380

    Article  Google Scholar 

  18. 18.

    Zhao L, Qin T, Ajit-Shenoi R, Zhang J, Liang X, Huang H (2010) Strength prediction of composite joints under tensile load. J Compos Mater 44(23):2759–2778

    Article  Google Scholar 

  19. 19.

    Shroff S, Kassapoglou C (2014) Designing highly loaded connections in a composite fuselage. J Aircr 51(3):833–840

    Article  Google Scholar 

  20. 20.

    Taylor R, Owens S (2004) Correlation of an analysis tool for 3-D reinforced bonded joints on the F-35 joint strike fighter. Paper presented at the 45st AIAA structures, structural dynamics and materials conference, Palm Springs, CA, USA, April

  21. 21.

    Feih S, Shercliff HR (2005) Composite failure prediction of single-L joint structures under bending. Compos Part A Appl Sci Manuf 36(3):381–395

    Article  Google Scholar 

  22. 22.

    Zhang Q, Cheng X, Cheng Y, Li W, Hu R (2019) Investigation of tensile behavior and influence factors of composite-to-metal 2D-scarf bonded joint. Eng Struct 180:284–294

    Article  Google Scholar 

  23. 23.

    Olmedo Á, Santiuste C (2012) On the prediction of bolted single-lap composite joints. Compos Struct 94(6):2110–2117

    Article  Google Scholar 

  24. 24.

    Liu P, Cheng X, Wang S, Liu S, Cheng Y (2016) Numerical analysis of bearing failure in countersunk composite joints using 3D explicit simulation method. Compos Struct 138:30–39

    Article  Google Scholar 

  25. 25.

    Reddy YS, Reddy JN (1993) Three-dimensional finite element progressive failure analysis of composite laminates under axial extension. J Compos Technol Res 15(2):73–87

    Article  Google Scholar 

  26. 26.

    Cheng X, Du X, Zhang J, Zhang J, Guo X, Bao J (2018) Effects of stacking sequence and rotation angle of patch on low velocity impact performance of scarf repaired laminates. Compos Part B Eng 133:78–85

    Article  Google Scholar 

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Correspondence to Xiaoquan Cheng.

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Du, X., Cheng, X., Cheng, Y. et al. Analysis and design improvement of composite bolted π-joints under bending load. J Braz. Soc. Mech. Sci. Eng. 42, 384 (2020). https://doi.org/10.1007/s40430-020-02476-2

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Keywords

  • Composite bolted π-joint
  • Bending load
  • Finite element analysis
  • Damage mechanism
  • Design improvement