کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4965684 1448455 2017 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Post-buckling analysis of nonlinear shear-deformable prismatic columns using a GBT consistent energy formulation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Post-buckling analysis of nonlinear shear-deformable prismatic columns using a GBT consistent energy formulation
چکیده انگلیسی
The post-buckling analysis of shear-deformable prismatic columns under uniform compression is studied using the Generalized Beam Theory. The member's deformed shape is described by a linear combination of three modes of deformation: axial elongation, bending and the shear deformation. The total potential energy is computed, based on the relevant relations of the theory of elasticity, and is rendered discrete through the Rayleigh-Ritz method. The buckling behaviours of the pinned-pinned columns are validated by comparison with available critical load formulae. The post-buckling behaviours, for three representative lengths, are computed by searching nontrivial equilibrium points in the neighbourhood of the critical state. The results, described by the load-displacement plots of the equilibrium paths, are symmetric and stable. Furthermore, the stability of the post-buckling paths, measured by the magnitude of their concavity in the neighbourhood of the critical state, increases with increasing values of cross section shear stiffness and of the member's length.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Structures - Volume 190, 1 October 2017, Pages 186-204
نویسندگان
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