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Gusset Plate Experiment

Gusset Plate Experiment. Gusset Plate Experiment. Gusset Plate Experiment. Gusset Plate Experiment. Gusset Plate Experiment. Thickness=1/ 4 in. G1. Gusset Plate Experiment. Thickness=1/ 2 in. G2. Gusset Plate Experiment. Thickness=1/ 4 in. Stub Further in Plate Same # of Bolts. G3.

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Gusset Plate Experiment

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  1. Gusset Plate Experiment

  2. Gusset Plate Experiment

  3. Gusset Plate Experiment

  4. Gusset Plate Experiment

  5. Gusset Plate Experiment Thickness=1/ 4 in. G1

  6. Gusset Plate Experiment Thickness=1/ 2 in. G2

  7. Gusset Plate Experiment Thickness=1/ 4 in. Stub Further in Plate Same # of Bolts G3

  8. Gusset Plate Experiment Thickness=1/ 4 in. Stub Further in Plate Same # of Bolts G3

  9. Gusset Plate Experiment Thickness=1/ 4 in. Same as G1 Same area, EI=EI/10 G4

  10. Gusset Plate Experiment

  11. Gusset Plate Experiment • 8 rosettes • 11 gages • R1-R3: Whitmore section at M4 • G8-G11: Unrestrained edge • Ga1-Ga7, R1: Strain distribution in M4 • R1, R6, R7, R8: Strains at the end of members

  12. Gusset Plate Experiment Whitmore, 1952

  13. Gusset Plate Experiment

  14. If Analyses (FHWA) then

  15. If Analyses (FHWA) then • “When lateral sway of gusset plates is possible, the effective length factor, K, for gusset plates may be taken from Table 2 for Cases (d) (1.0), (e) (2.0), or (f) (2.0), depending on the anticipated buckled shape. When lateral sway of gusset plates is not possible, the effective length factor, K, for gusset plates may be taken from Table 2 for Cases (a)(0.5), (b) (0.7), or (c) (1.0), as appropriate.” (FHWA, 2009) • When is the lateral sway of gusset plate possible ?

  16. Analyses (FE analyses, scripted single plate analyses) • Non Sway Buckling (Euler Buckling) • Sway Buckling • (Euler Buckling) • Yielding of the Plate • Easy, fast and convenient for parametric studies, however since the member stiffness is not introduced, can not capture the sway buckling. • Member stiffness can be introduced as a spring attached to the fastener locations • Calibration according to the experiment is needed

  17. Analyses (FE analyses; Global Model) • Eigen value buckling analyses was conducted and bifurcation buckling was obtained • According to the first mode, initial imperfection was introduced to the model

  18. Analyses (FE analyses; Global Model) • (100% x Thickness), (50% x Thickness), (25% x Thickness) and (12.5% x Thickness) initial imperfection was introduced and gusset plate was analyzed.

  19. Analyses (FE analyses; Global Model) • EI of the member was decreased and same procedure was applied

  20. Analyses (FE analyses; Global Model) • Calibration according to experimental results is needed • Global model can also be scripted

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