کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
267740 504411 2012 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Lateral instability of elliptical hollow section beams
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
Lateral instability of elliptical hollow section beams
چکیده انگلیسی

Lateral instability of elliptical hollow section (EHS) members in bending is studied in this paper. Eight laterally unrestrained EHS beams, with a constant cross-sectional aspect ratio of two, were tested in three-point bending. The test set-up, material properties, section geometry, residual stress measurements and full load-deformation responses of the test specimens are reported herein. To supplement the experimental data, numerical models were also developed and validated against the test results. Parametric studies were then performed, to assess the influence of cross-sectional aspect ratio and member slenderness on lateral stability. Based on the assembled structural performance data, lateral torsional buckling curves for elliptical hollow section beams have been developed and statistically verified. Limiting lengths below which lateral torsional buckling (LTB) need not be considered have also been proposed.


► Full scale experiments on elliptical hollow section (EHS) beams.
► Residual stress measurements in EHS.
► Nonlinear FE simulations of EHS beams.
► Development of design guidance for EHS beams.
► Statistical evaluation of design rules.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 37, April 2012, Pages 152–166
نویسندگان
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