Bolted and screwed connections of thin sheet steels at elevated temperatures

Finite element modelling of thin sheet steel screw connections

“…10 Yan (2012) 2-63 2. Table 3-1 Material properties of thin sheet steels 3-79 Table 3-2 Contact Property Models (Yan, 2012) 3-87 Table 4-1 FEA-to-predicted results for different sheet thicknesses 4-96 Table 4-2 FEA-to-predicted results for variation in the number of screws 4-96 Table 4-3 FEA-to-predicted results for variation in the number of screws excluding reduced net section in tension equation 4-97 Table 4-4 Comparison of FEA to predicted loads for variation in screw size 4-98 Table 4-5 Effect of screw pattern on screw rotation at 5 mm displacement 4-111 Table 4 (Ugural & Fenster, 2012) 3-88 (Greer et al, 2013) A-125 Figure A-2 Von Mises yield criteria for plane stress showing yield ellipse (Chen & Han, 1998) A-126 Figure A-3 Master surface allowed to penetrate slave surface (ABAQUS, 2015) A-129 Figure (Serrette & López, 1996) B-134 Figure C …”

“…The finite element modelling procedure is discussed in detail. For the calibration of the finite element model, existing literature was used and thus the finite element model was calibrated to results presented by Yan (2012). In the analysis, the explicit dynamic analysis method was utilised and the model was pulled to a maximum displacement of 5 mm by means of the displacement controlled loading method.…”

“…Yan (2012) attributed this to the difficulty in attaining convergence when the steel plate is less than 1 mm in thickness, combined with the complications of modelling the screw shank threading, and the uncertainty of the contact settings between the screws and plates.…”

“…Several aspects of the modelling procedure were examined, including: contact definitions when using kinematic or penalty contact tracking; the weighting between the master and slave surfaces in the contact formulation; and the effective control of the applied load and how it affects the energy output of the finite element model. The finite element model was verified through calibration against the research conducted by Yan (2012), and the decision was made to limit the application of the displacement controlled loading, up to a maximum of 5 mm. The finite element analysis results obtained remained within the 5 % top and bottom curves obtained by Yan (2012) DECLARATION I, the undersigned hereby declare that:…”

“…The finite element model was verified through calibration against the research conducted by Yan (2012), and the decision was made to limit the application of the displacement controlled loading, up to a maximum of 5 mm. The finite element analysis results obtained remained within the 5 % top and bottom curves obtained by Yan (2012) DECLARATION I, the undersigned hereby declare that:…”