SHEAR STRENGTH OF BEAMS WITH CORRUGATED WEBS

Buckling of the web resulted when investigators tested beams with corrugated webs to failure under shear. The test specimens were modeled using finite elements. ABAQUS was used to conduct nonlinear analysis. The load increment and the mesh size were chosen based on studies of their effects. The comparison between the results from the finite-element analysis and the tests was satisfactory, with the average ratio between analytical and experimental buckling loads calculated to be 1.15. Analytical results were higher due to the presence of unavoidable imperfections in the webs of the test specimens. Finite-element models with seeded imperfections gave results similar to those obtained in the tests. In experimental and analytical results, the authors noted that buckling of the web was local and global for the coarse and dense corrugations, respectively. Buckling formulas are proposed based on local buckling of the corrugation folds as isotropic flat plates or global buckling of the entire web panel as an orthotropic plate. Comparisons between the results from the formulas, the finite-element analysis, and the tests are provided and shown to be satisfactory.

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  • English

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  • Accession Number: 00720431
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 17 1996 12:00AM