مشخصات پژوهش

عنوان	NONLINEAR ANALYSIS OF PLANE TRUSSES USING LAGRANGIAN DESCRIPTIONS
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Truss structures, Bridges, Finite element method, Large deformation, Nonlinear materials
چکیده	There are enormous truss structures like huge bridges in the world. Analysis of these structures is done using finite element method and based on elastic and linear material and small deformation theory. These structures may face unexpected loads because of variable environmental situations. The aforementioned loads could lead to large deformation and inelastic manner. So it is necessary that higher order elastic or inelastic analysis of these structures is done. The aim of this research is analysis of truss structures considering effect of large deformation and strain and also the effect of nonlinear materials. Here total Lagrangian and Updated Lagrangian methods are used to consider the effect of large deformation. After deriving required relations, finite element software is prepared to analyze the structures. Newton-Raphson was utilized to solve nonlinear force-deformation equations.To confirm results of the software, some examples are presented.
پژوهشگران	مجید زنگنه فر (نفر سوم)، علیرضا حبیبی (نفر دوم)، مهدی ایزدپناه (نفر اول)