Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11889
Title: Mixed mode crack growth in elasto-plastic-creeping solids using XFEM
Authors: Kumar M.
Singh, Indra Vir
Mishra, B. K.
Ahmad S.
Rao A.V.
Kumar V.
Published in: Engineering Fracture Mechanics
Abstract: In this work, an extended finite element based fully implicit algorithm is proposed to predict the creep deformation and creep crack growth in elasto-plastic-creeping solids. The effect of stress relaxation and redistribution due to creep strain is captured through elasto-plastic-creep analysis. In creep crack growth analysis, mostly C∗ is used to compute the creep crack growth which includes only extensive creep whereas C(t)-integral includes small-scale creep, transition creep and extensive creep. Thus, in the present study, creep crack characterization parameter C(t)-integral is evaluated using XFEM to compute creep crack growth rate. The mixed mode stress intensity factors are evaluated using domain based interaction integral approach to estimate the crack growth direction. Various numerical issues related to history dependency of plasticity and creep are properly addressed. To validate the present approach, various numerical problems are solved and the predicted creep deformation and creep crack growth results are compared with the experimental observations. © 2018 Elsevier Ltd
Citation: Engineering Fracture Mechanics (2018), 199(): 489-517
URI: https://doi.org/10.1016/j.engfracmech.2018.05.014
http://repository.iitr.ac.in/handle/123456789/11889
Issue Date: 2018
Publisher: Elsevier Ltd
Keywords: C(t)-integral
Creep
Creep crack growth
Relaxation and redistribution
XFEM
ISSN: 137944
Author Scopus IDs: 57199856545
57204061377
55578538300
56640431400
57198920326
57200714018
Author Affiliations: Kumar, M., Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeUttarakhand 247667, India
Singh, I.V., Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeUttarakhand 247667, India
Mishra, B.K., Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeUttarakhand 247667, India
Ahmad, S., Defence Metallurgical Research Laboratory, DRDO, Hyderabad, India
Rao, A.V., Defence Metallurgical Research Laboratory, DRDO, Hyderabad, India
Kumar, V., Defence Metallurgical Research Laboratory, DRDO, Hyderabad, India
Funding Details: This work is done as part of doctoral thesis work of Mr. Manish Kumar under the scheme of Ministry of Human Resource Development (MHRD), Government of India, and it does not receive any specific funding from any other funding agency.
Corresponding Author: Singh, I.V.; Department of Mechanical and Industrial Engineering, Indian Institute of Technology RoorkeeIndia; email: indrafme@iitr.ac.in
Appears in Collections:Journal Publications [ME]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.