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P. N. Jiki, “Prediction of Stress Concentration Factors in Un-lapped Square Hollow ‘K’ Joints by the Finite Element Method,” Nigerian Journal of Technology, Vol. 25, No. 1, 2006, pp. 5-14.

has been cited by the following article:

• TITLE: Location Results for Brace Spacing in Gap Tubular “K” Joints Using FEM

  AUTHORS: P. N. Jiki

  KEYWORDS: Tubular Joint; Finite Element; Computer Simulation; Structural Joints; Effect of Bracing; Stress Concentration; Stress Distribution

  JOURNAL NAME: Modern Mechanical Engineering, Vol.3 No.1, February 27, 2013

  ABSTRACT: The 8-node iso-parametric thin shell element was employed in the study of stress concentrations in the welded tubular “K” joint. Element equilibrium equations were derived using isoparametric formulation based on thin shell theory. After assembly, the resulting system equations were solved using existing fortran programs. Numerical experiments were conducted to isolate and locate ideal gap (positions) for the two braces of the “K” joint. The nominal stresses were calculated from which stress concentration factors were obtained. The resulting stress concentration factors were presented both as tables and as figures. A good agreement between our solutions and those for model joints in the literature is good and acceptable. It was found that the wider apart the brace spacing is, the weaker the strength of the joint. It was also found that the best location for the braces occurs when the stress level changes sign either from positive to negative or vice versa at a critical sampling point.