کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
510010 865733 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonlinear elastic analysis of steel planar frames under fire loads
ترجمه فارسی عنوان
تجزیه و تحلیل غیر خطی الاستیک فریم های فلزی فولادی تحت بارهای آتش
کلمات کلیدی
بارگذاری آتش، سازه های فلزی، تجزیه و تحلیل انعطاف پذیر، غیر خطی هندسی، عنصر دقیق دقیق
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی


• The nonlinear elastic problem for a planar frame subjected to thermal loadings is resolved here.
• The elastic law accounts for thermal deformations and for temperature-dependence of the elastic modulus.
• The elastic problem is formulated in a mixed equilibrium-compatibility form.
• After integration of the field equation an ‘exact’ finite element is derived.
• The nonlinear algebraic problem is solved numerically by the Newton–Raphson procedure.

The nonlinear elastic problem for planar frames, made of rectilinear beams subjected to thermal loadings, is resolved here. The basic element is an Euler–Bernoulli beam, whose elongation is a nonlinear function of the displacements. The elastic law accounts for thermal deformations and for temperature-dependence of the elastic modulus. The elastic problem is formulated in a mixed equilibrium-compatibility form and an ‘exact’ finite element is derived. Assembling the element relations, the governing equations for the frame are recast in a discrete form. The nonlinear algebraic problem is solved numerically and results are compared with those provided by a FE software.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Structures - Volume 150, 1 April 2015, Pages 23–33
نویسندگان
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