Predicting Load-Carrying Capacity of Dovetail Connections Using the Stochastic Finite Element Method

Authors

  • G. Y. Jeong
  • M. J. Park
  • J. S. Park
  • K. H. Hwang

Keywords:

Dovetail connection, stress, stochastic finite element method

Abstract

The goal of this study was to evaluate the load-carrying capacity of dovetail connections. Different tenon angles (θ), tenon neck widths (w1), tenon head widths (w2), and tenon heights (h) were used to analyze stress distribution and strength from dovetail connections using the finite element method (FEM). Although different stress distributions were found from the FEM models, shear and tension perpendicular to the grain stresses were found to be the most critical stresses controlling strength of the dovetail connection. Strength of the dovetail connection predicted from the deterministic FEM models was validated from the results of experimental tests. A combination of four geometric parameters for mortise and tenon from the dovetail connection maximizing load-carrying capacity was found. Allowable load-carrying capacity of the dovetail connection was estimated using the stochastic finite element method associated with allowable stress design and load resistance factor design concepts.

References

AFPA (1996) Standard for load and resistance factor design for engineered wood construction. American Forest and Paper Association, Washington, DC.nAFPA (2005) National design specification for wood construction. American Forest and Paper Association, Washington, DC.nASTM (2007) D 1990-07. Standard practice for establishing allowable properties for visually-graded dimension lumber from in-grade tests of full-size specimens. American Society for Testing and Materials, West Conshohocken, PA.nASTM (2010) D 5457-10. Standard specification for computing reference resistance of wood-based materials and structural connections for load and resistance factor design. American Society for Testing and Materials, West Conshohocken, PA.nASTM (2011) D 245-06. Standard practice for establishing structural grades and related allowable properties for visually graded lumber. American Society for Testing and Materials, West Conshohocken, PA.nBodig J, Goodman JR (1973) Prediction of elastic parameters for wood. Wood Sci 5(4):249-264.nHwang KH, Park JS (2008) Estimation of moment resisting property for pin connection using shear strength of small glulam specimens. Mokchae Konghak 36(4):58-65 [in Korean with summary in English].nJeong GY, Hindman DP (2009) Ultimate tensile strength of loblolly pine strands using stochastic finite element method. J Mater Sci 44(14):3824-3832.nJeong GY, Hindman DP, Zink-Sharp A (2010) Orthotropic properties of loblolly pine (Pinus taeda) strands. J Mater Sci 45(21):5820-5830.nKeenan FJ (1974) Shear strength of wood beams. Forest Prod J 24(9):63-70.nMose DM, Prion HGL (2004) Stress and failure analysis of wood composites: A new model. Compos, Part B Eng 35(3):251-261.nPang SJ, Oh JK, Park JS, Park CY, Lee JJ (2011) Moment-carrying capacity of dovetailed mortise and tenon joints with or without beam shoulder. J Struct Eng 137(7):785-789.nPark JS, Hwang KH, Park MJ, Shim KB (2010) Tensile performance of machine-cut dovetail joint with Larch glulam. Mokchae Konghak 38(3):1-6 [in Korean with summary in English].nSangree RH, Schafer BW (2009) Experimental and numerical analysis of a halved and tabled traditional timber scarf joint. Construct Build Mater 23(2):615-624.nTannert T, Lam F, Vallée T (2010) Strength prediction for rounded dovetail connections considering size effects. J Eng Mech 136(3):358-366.nTannert T, Lam F, Vallée T (2011) Structural performance of rounded dovetail connections: Experimental and numerical investigations. Eur J Wood Wood Prod 69(3):471-482.n

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Published

2012-10-15

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Research Contributions