کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4920154 1429082 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A weak-form quadrature element formulation for 3D beam elements used in nonlinear and postbuckling analysis of space frames
ترجمه فارسی عنوان
فرمول عنصر کوادراتوری ضعیف برای عناصر پرتو سه بعدی مورد استفاده در تجزیه و تحلیل غیر خطی و پس از قاچاق فریم های فضایی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
A weak-form quadrature element formulation is presented for the three-dimensional beam element for use in the geometrically nonlinear and postbuckling analysis of space frames. Starting from the virtual work equation of a beam in the linearized, incremental sense, the quadrature element method (QEM) is employed to derive the elastic stiffness, geometric stiffness, and induced moment matrices of the beam with due account taken of the large rotations in three-dimensional space. All the stiffness matrices are adopted in the incremental-iterative analysis using the generalized displacement control (GDC) method, with specific considerations for the predictor and corrector phases. By comparing the results obtained for all the benchmark problems studied with existing ones, it is demonstrated that the present formulation is capable of predicting large displacements and rotations, as well as the postbuckling paths of space frames. The present formulation is featured by the fact that it is simple, straightforward, and reliable.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 145, 15 August 2017, Pages 34-43
نویسندگان
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