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Please use this identifier to cite or link to this item: 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]

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