A Simple Elasto-Plastic Iterative Method by Fem for the Analysis of Plane Articulated Truss: Case of a 3-Bar Truss  

作　　者：Djomi Rolland Fokam Bopda Christian Kenmeugne Bienvenu Kanmogne Abraham Mbobda Gerard Djomi Rolland;Fokam Bopda Christian;Kenmeugne Bienvenu;Kanmogne Abraham;Mbobda Gerard(Laboratoire Engineering Civil et Mécanique, National Advanced School of Engineering (ENSPY/UY1), University of Yaounde 1, Yaoundé, Cameroon)

机构地区：[1]Laboratoire Engineering Civil et Mécanique, National Advanced School of Engineering (ENSPY/UY1), University of Yaounde 1, Yaoundé, Cameroon

出　　处：《Journal of Materials Science and Chemical Engineering》2021年第6期12-23,共12页材料科学与化学工程（英文）

摘　　要：This paper presents a simplified numerical simulation tool for the elasto-plastic calculation of plane articulated truss by the finite element method (FEM) in MATLAB. The simplified approach consists of linearizing isotropic strain-hardening (to obtain a bilinear material law). The numerical implementation is built on the basis of the incremental and iterative FEM algorithms. The numerical resolution technique used is based on the projection methods of the modified Newton-Raphson solution. The MATLAB program is developed for the application of a 3-bar truss under monotonous quasi-static loading. Different values of the approximation error of the convergence criterion are used to study its impact on the quality of the algorithm. Numerical simulations have shown the reliability and quality of our simplified approach regardless of the approximation error.This paper presents a simplified numerical simulation tool for the elasto-plastic calculation of plane articulated truss by the finite element method (FEM) in MATLAB. The simplified approach consists of linearizing isotropic strain-hardening (to obtain a bilinear material law). The numerical implementation is built on the basis of the incremental and iterative FEM algorithms. The numerical resolution technique used is based on the projection methods of the modified Newton-Raphson solution. The MATLAB program is developed for the application of a 3-bar truss under monotonous quasi-static loading. Different values of the approximation error of the convergence criterion are used to study its impact on the quality of the algorithm. Numerical simulations have shown the reliability and quality of our simplified approach regardless of the approximation error.

关 键 词：Articulated Truss ELASTO-PLASTIC NEWTON-RAPHSON Finite Element Method 

分 类 号：O17[理学—数学]