Sudhanva Kusuma Chandrashekhara

ESR 14:
Sudhanva Kusuma Chandrashekhara

joined the THREAD project in September 2020 (read his welcome message)

I am Sudhanva Kusuma Chandrashekhara and I am from India. I have a bachelor’s degree in Mechanical Engineering from Visveswaraya Technological University (India) and a master’s degree in Computational Science and Engineering from the University of Rostock (Germany).
A vast expanse of opportunities, enormous scope for research and innovation coupled with my personal interests in the field of Applied Mathematics led me to choose the area of Computational Science and Engineering. My master’s program had lots to offer in the areas of Computational Methods, Numerical Mathematics, analysis of PDE and at this point I started taking special interest in the areas of Linear Algebra and Finite Element Methods. Later these interests led me to take up software project and master thesis at the chair of wind energy technology. During these projects, I worked on developing finite element based solver for the calculation of natural frequencies of a wind turbine rotor blade using Euler Bernoulli and Timoshenko beam elements to investigate the effect of structural twist and prebending on 3D eigenmodes.
Soon after my master’s, my desire to explore newer areas started with a research fellowship in a DST- INSPIRE project at the Indian Institute of Technology, Delhi. The project aimed at low frequency vibration mitigation using periodic local resonators and I worked on developing solvers for the calculation of flexural band gaps (Bragg gap and Local resonant band gaps) for the linear periodic resonators and investigated the existence of flexural bandgaps at low frequency range. Further during the fall of 2019, I also had an opportunity to work in the field of high-speed aerodynamics and aerothermodynamic analysis. I worked on development of a heat conduction solver using finite volume method and coupling with the fluid flow solver for high speed flow application (Supersonic and Hypersonic).
Staying engaged in the field of Mathematical modelling and simulation, stimulated my interest and strengthened my desire to continue my doctoral research in the same field and this very fascination has brought me here as a Marie Curie Fellow on the THREAD project. I feel confident that given the inherent interdisciplinary and collaborative nature of the group; this opportunity will provide an excellent entry point towards an exciting research career.

Sudhanva Kusuma Chandrashekhara, September 2020


Host Institution
University of Ljubljana (Slovenia)
Supervisor
Dejan Zupan
Description

The ESR will work on numerical modelling of flexible beam-like structures with a special focus on strain localization. In damaged materials, strain localisation often occurs, resulting in discontinuity of strains in structural models and local loss of uniqueness of the solution. This makes the problem challenging and special solution methods need to be designed to be capable of dealing with such phenomena. We are looking for stable, reliable and numerically efficient methods for frame-like structures.

Expected Results

A novel family of finite beam elements taking into account geometrical and material non-linearity that will be able to describe strain localisation will be proposed. Open-source software capable of efficiently solving spatial frame-like structures with strain localization is expected to be developed.

Secondments

planned at Igmat d.d. Building Materials Institute (industrial partner), Fraunhofer ITWM and University of Rijeka, Faculty of Civil Engineering

associated with the Industrial Challenges

IC 6 Civil engineering
IC 9 Software development

Publications

PhD thesis

Sudhanva Kusuma Chandrashekhara (2024): Geometrically and materially nonlinear beam dynamics with strain localization. University of Ljubljana, Faculty of Civil and Geodetic Engineering, see link

Articles in peer-reviewed scientific journals

  • Sudhanva Kusuma Chandrashekhara, Dejan Zupan (2024): Analyzing material softening and strain localisation through embedded strong discontinuity approach within velocity-based beam formulation; Computers & Structures 301, 107464; DOI: 10.1016/j.compstruc.2024.107464, see also link
  • Sudhanva Kusuma Chandrashekhara, Dejan Zupan (2023): Path following using velocity-based approach in quasi-static analysis; International Journal of Solids and Structures 275, 112292; DOI 10.1016/j.ijsolstr.2023.112292, see also link

Publications in conference proceedings

  • Sudhanva Kusuma Chandrashekhara, Dejan Zupan (2021): Velocity based elements for the quasi-static analysis of beams and frames. In: Janko Slavič, Martin Česnik (eds.): Proceedings of the National Congress of Slovenian Society of Mechanics – Kuhelj days / Bohinj, Slovenia: Slovenian Society of Mechanics, 2021, pp. 23–30; link

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