کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10286970 | 504478 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A refined finite element formulation for flexural and torsional buckling of beam-columns with finite rotations
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
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چکیده انگلیسی
This paper describes a consistent formulation of a tangent stiffness matrix for the geometrically nonlinear analysis of the space beam-column elements allowing for axial-flexural, lateral-torsional and axial-torsional buckling. In the proposed formulation, three deformation matrices are derived for moderately large rotations in practical three-dimensional space frames subjected to axial force and moments. These matrices are functions of the element deformations and include the coupling among axial, lateral and torsional deformations. The proposed matrices are used together with linear and geometric stiffness matrices for beam elements to study the large deflection behavior of space frames which comprise members with negligible warping effects. Numerical examples show that the proposed element formulation is accurate and efficient in predicting the nonlinear behavior of space frames even when only a few elements are used to model a member.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 27, Issue 5, April 2005, Pages 749-759
Journal: Engineering Structures - Volume 27, Issue 5, April 2005, Pages 749-759
نویسندگان
Jian-Xin Gu, Siu-Lai Chan,