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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/19833
Title: Mixed-Mode Creep Crack Growth Simulations Using Continuum Damage Mechanics and Virtual Node XFEM
Authors: Pandey V.B.
Kumar M.
Singh, Indra Vir
Mishra, B. K.
Ahmad S.
Venugopal Rao A.
Kumar V.
Bhaduri A.K.
Kumar R.S.
Nagesha A.
Sasikala G.
Prakash R.V.
Published in: Lecture Notes in Mechanical Engineering
Proceedings of 2nd International Conference on Structural Integrity, ICONS 2018
Abstract: In this work, mixed-mode elasto-plastic creep crack growth simulations are performed through virtual node extended finite element method. The continuum damage mechanics is combined with virtual node extended finite element method (VNXFEM) to avoid the requirement of fine mesh. The VNXFEM models the crack growth within an element using coarse mesh. J2 plasticity model is used to model the plasticity of isotropic and homogeneous material. To maintain the equilibrium in the elasto-plastic analysis, Newton–Raphson method is implemented. Creep strains and damage variable are computed from Liu–Murakami creep damage model. To solve the creep and damage equations, forward Euler method is applied. To reduce the local behavior of damage (mesh dependency of damage), mesh regularization schemes are adopted. P91 steel specimen at 650 °C is used and 2-D plane strain condition is assumed for simulating the mixed-mode crack propagation. The present study summarizes that VNXFEM is an effective method to model the crack propagation with a coarse mesh.
Citation: Lecture Notes in Mechanical Engineering, 2020, 275- 284
URI: https://doi.org/10.1007/978-981-13-8767-8_23
http://repository.iitr.ac.in/handle/123456789/19833
Issue Date: 2020
Publisher: Springer
Keywords: Continuum damage mechanics
Creep crack growth
Elasto-plastic
Nonlocal approach
Virtual node extended finite element method
ISBN: 9.79E+12
ISSN: 21954356
Author Scopus IDs: 57191657852
57214630311
57204061377
55578538300
56640431400
6505934338
57220974648
Author Affiliations: Pandey, V.B., Department of Mechanical and Industrial Engineering, IIT Roorkee, Roorkee, Uttarakhand 247667, India
Kumar, M., Department of Mechanical and Industrial Engineering, IIT Roorkee, Roorkee, Uttarakhand 247667, India
Singh, I.V., Department
Funding Details: Defence Research and Development Organisation, DRDO: DGNSM/04/4019/DMR305/CARS/XFEM, DRDO.This work is financially supported by the Defence Metallurgical Research Laboratory (DMRL), Defence Research and Development Organization (DRDO), Hyderabad, through grant no. DGNSM/04/4019/DMR305/CARS/XFEM dated November 24, 2014..Acknowledgements This work is financially supported by the Defence Metallurgical Research Laboratory (DMRL), Defence Research and Development Organization (DRDO), Hyderabad, through grant no. DGNSM/04/4019/DMR305/CARS/XFEM dated November 24, 2014.
Corresponding Author: Pandey, V.B.; Department of Mechanical and Industrial Engineering, India; email: vibhuti.pandey27@gmail.com
Appears in Collections:Conference Publications [ME]

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