http://repository.iitr.ac.in/handle/123456789/11236
Title: | Ductile failure modeling and simulations using coupled FE–EFG approach |
Authors: | Shedbale A.S. Singh, Indra Vir Mishra, B. K. Sharma K. |
Published in: | International Journal of Fracture |
Abstract: | In the present work, a ductile fracture model has been employed to predict the failure of tensile specimen using coupled finite element–element free Galerkin (FE–EFG) approach. The fracture strain as a function of stress triaxiality has been evaluated by analyzing the notched tensile specimens. In the coupled approach, a small portion of the domain, where severe plastic deformation is expected, is modeled by EFG method whereas the rest of the domain is modeled by FEM to exploit the advantages of both the methods. A ramp function has been used in the interface region to maintain the continuity between FE and EFG domains. The nonlinear material behavior is modeled by von-Mises yield criterion and Hollomon’s power law. An implicit return mapping algorithm is employed for stress equilibrium in the plasticity model. The effect of geometric nonlinearity as a result of large deformation is captured by updated Lagrangian approach. The coupled approach is used to study the fracture behavior of two different cracked specimens in order to highlight its capabilities. © 2016, Springer Science+Business Media Dordrecht. |
Citation: | International Journal of Fracture (2017), 203(43832): 183-209 |
URI: | https://doi.org/10.1007/s10704-016-0137-3 http://repository.iitr.ac.in/handle/123456789/11236 |
Issue Date: | 2017 |
Publisher: | Springer Netherlands |
Keywords: | Coupled FE–EFG approach Ductile fracture Hollomon’s power law Large deformation Ramp function |
ISSN: | 3769429 |
Author Scopus IDs: | 55881470600 57204061377 55578538300 16234476200 |
Author Affiliations: | Shedbale, A.S., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India Singh, I.V., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India Mishra, B.K., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India Sharma, K., Reactor Safety Division, Bhabha Atomic Research Center, Mumbai, India |
Corresponding Author: | Singh, I.V.; Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeIndia; email: ivsingh@gmail.com |
Appears in Collections: | Journal Publications [ME] |
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.