R
Ratna Kumar Annabattula
Researcher at Indian Institute of Technology Madras
Publications - 91
Citations - 1226
Ratna Kumar Annabattula is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Finite element method & Discrete element method. The author has an hindex of 15, co-authored 80 publications receiving 787 citations. Previous affiliations of Ratna Kumar Annabattula include Karlsruhe Institute of Technology & University of Groningen.
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Journal ArticleDOI
Phase field modelling of crack propagation in functionally graded materials
TL;DR: A phase field formulation for fracture in functionally graded materials builds upon homogenization theory and accounts for the spatial variation of elastic and fracture properties and identifies material gradient profiles that prevent unstable fracture and enhance crack growth resistance.
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Adaptive phase-field modeling of brittle fracture using the scaled boundary finite element method
Hirshikesh,A.L.N. Pramod,Ratna Kumar Annabattula,Ean Tat Ooi,Chongmin Song,Sundararajan Natarajan +5 more
TL;DR: Numerical results show an improvement in the computational efficiency in terms of the number of elements required in the standard PFM without compromising the accuracy of the solution.
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Status of ceramic breeder pebble bed thermo-mechanics R&D and impact on breeder material mechanical strength
Alice Ying,J. Reimann,Lorenzo Boccaccini,Mikio Enoeda,Marc Kamlah,R. Knitter,Yixiang Gan,Jaap G. van der Laan,L. Magielsen,P.A. Di Maio,G. Dell'Orco,Ratna Kumar Annabattula,Jon T. Van Lew,Hisashi Tanigawa,Sander van Til +14 more
TL;DR: Current achievements in pebble bed thermomechanics that were carried out by members of the IEA Fusion Nuclear Technology Subtask I Solid Breeding Blanket are summarized to help navigate future research.
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A FEniCS implementation of the phase field method for quasi-static brittle fracture
TL;DR: The present work discusses the implementation of the phase field method for brittle fracture within the open-source finite element software, FEniCS, which provides a framework for the automated solutions of the partial differential equations.
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Modeling crack propagation in variable stiffness composite laminates using the phase field method
TL;DR: In this paper, the role played by the orientation of the fiber and the inter-fiber spacing on the fracture pattern in the composite is investigated. But the main objectives of this work are: (a) to study the crack propagation path and (b) to investigate the influence of the fibre-matrix interface on the crack path.