Large Elasto-Plastic Deformations in Bi-Material Components by Coupled FE-EFGM

International Conference on Materials, Alloys and Experimental Mechanics 2017

材料科学;金属学;机械制造

Harmain, G.A.^1 ; Jameel, Azher^1,2 ; Najar, Farooq A.^1 ; Masoodi, Junaid H.^1

Department of Mechanical Engineering, National Institute of Technology, Srinagar, Hazratbal

190006, India^1

Department of Mechanical Engineering, Shri Mata Vaishno Devi University, Katra

182320, India^2

关键词: Bi-material;    Coupled FE-EFGM;    Elastoplastic deformation;    Element free Galerkin methods;    Non linear elasto plastics;    Numerical problems;    Ramberg-Osgood models;    Total Lagrangian;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/225/1/012295/pdf
DOI  :  10.1088/1757-899X/225/1/012295

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In the recent years, the coupled finite element-element free Galerkin method (coupled FE-EFGM) has found wide application in modeling large elasto-plastic deformations in bi-material components. The coupled FE-EFGM applies EFGM in the portion of the domain where large deformations are expected to occur, whereas the rest of the domain is discretized into conventional finite elements. The large deformation occurring in the domain has been modeled by using the total Lagrangian approach. The non-linear elasto-plastic behavior of the material has been represented by the Ramberg-Osgood model. Finally, two numerical problems are solved by the coupled FE-EFGM to illustrate its applicability, efficiency and accuracy in modeling large elasto-plastic deformations in bi-material samples.