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oai:figshare.com:article/34037976 2026-10-01T03:57:21Z category_26536 category_26764 category_26770 category_26779 category_28813 category_30289 category_26755 category_30142 category_26773 category_29776 category_29212 category_25789 category_29821 category_24964 category_26857 category_30127 category_29812 category_29224 category_29815 category_26533 category_29011 category_24979 category_24988 category_25012 category_24973 category_24994 category_25168 item_type_14 month_year_10_2026

Inverse Design of Nonlinear Phononic Metamaterials for Nonlinear Wave Cloaking — iNCMDAO 2024 Conference Paper (IISc Bangalore) Pravinkumar Ghodake (3701242) Engineering education Mechanical engineering asset management Numerical modelling and mechanical characterisation Mechanical engineering not elsewhere classified Applications in physical sciences Other physical sciences not elsewhere classified Acoustics and noise control (excl. architectural acoustics) Acoustics and acoustical devices; waves Solid mechanics Theoretical and applied mechanics Computational complexity and computability Computational modelling and simulation in earth sciences Numerical and computational mathematics not elsewhere classified Data visualisation and computational (incl. parametric and generative) design Granular mechanics Nonlinear optics and spectroscopy Numerical analysis Numerical computation and mathematical software Numerical solution of differential and integral equations Engineering design Computer aided design Design practice and methods Industrial and product design Design not elsewhere classified Design history, theory and criticism Models and simulations of design Theory and design of materials iNCMDAO 2024 IISc Bangalore Tata Memorial Auditorium inverse design nonlinear phononic metamaterials nonlinear wave cloaking elastic invisibility topology optimization nonlinear ultrasonics harmonic scattering higher harmonics Murnaghan hyperelastic inclusions finite element method COMSOL gradient-free optimization Nelder-Mead nonlinear metamaterials solid mechanics inverse design algorithm inverse design methods inverse design strategy inverse design method inverse design validity topology optimization approach topology optimization approaches topology optimization design Topology optimization method topology optimization method topology optimization model Topology optimization. topology optimization algorithm TOPOLOGY OPTIMIZATION Topology Optimization Nonlinear ultrasonics Nonlinear Ultrasonics Harmonic Scattering higher harmonics generation Higher harmonics Murnaghan Hyperelastic Model Murnaghan hyperelastic material Murnaghan equation of state Finite element method models Finite element method-based simulations Gradient-Free Optimization Nelder-Mead with Threshold Accepting Nelder-Mead Downhill Simplex Algorithm Nelder-Mead Simplex Nelder-Mead simplex optimization method Nelder-Mead simplex algorithm Nelder-Mead nonlinear simplex nelder-mead Nelder-Mead optimisation Nelder-Mead algorithm Nelder-Mead Algorithm Nelder-Mead simplex optimization Pravinkumar Ghodake Pravinkumar Ramchandra Ghodake Design Optimization Design & Technology Generative design research Elastodynamics simulations This conference contribution is a peer-reviewed conference paper presented by Pravinkumar Ghodake (Department of Mechanical Engineering, IIT Bombay) at the 1st International and 7th National Conference on Multidisciplinary Design, Analysis, and Optimization (iNCMDAO 2024), jointly organized by the Indian Institute of Science (IISc), Bengaluru and the Aeronautical Society of India (AeSI), held December 16–18, 2024.Title of contribution: "Inverse Design of Nonlinear Phononic Metamaterials for Nonlinear Wave Cloaking"Abstract: This work presents an advanced inverse design framework to achieve nonlinear wave cloaking and acoustic invisibility in heterogeneous solid media. To overcome the challenges of modeling complex arrays of incipient defects (such as dislocation networks and local grain plasticity), the framework models multi-scaled elliptical inclusions using a hyperelastic (Murnaghan) formulation matched in linear impedance. By running gradient-free inverse optimization algorithms on transient finite element models, the setup dynamically coordinates inclusion dimensions, rotation angles, and relative spatial points to suppress parasitic transmitted harmonics, establishing a new design paradigm for nonlinear cloaking technologies.Session Details:<ul><li>Track: Topology Optimization (Track 1)</li><li>Session: S1 T1 — Session 1, Track 1</li><li>Venue: Main Hall, J. N. Tata Auditorium, IISc Bangalore</li><li>Date: 17 December 2024</li><li>Time slot: 11:00 AM – 11:15 AM</li><li>Paper ID: 8</li><li>Session Chair: Prof. Prabhat Kumar</li><li>Co-Chair: Sachin Singh Gautham</li><li>Format: Solo presenter (single author)</li></ul>Context and Significance: This paper was presented in the Topology Optimization track in the main hall of the J. N. Tata Auditorium at IISc Bangalore — the flagship venue of the conference. The session was attended by leading international researchers in optimization and metamaterials, including: <ul><li>Prof. Kalyanmoy Deb (Michigan State University) — one of the most cited researchers globally in evolutionary multi-objective optimization</li><li>Prof. Ole Sigmund (Denmark Technical University) — pioneer of topology optimization</li><li>Prof. Krishnan Suresh (University of Wisconsin, Madison)</li><li>Prof. Wei Chen (Northwestern University)</li><li>Prof. Faez Ahmed (MIT)</li><li>Prof. Sankaran Mahadevan (Vanderbilt University)</li><li>Prof. Gil Ho Yoon (Hanyang University)</li><li>Prof. Prabhat Hajela (Rensselaer Polytechnic Institute)</li><li>Prof. Roger A. Sauer (Ruhr-Universität Bochum)</li><li>Prof. Mathias Huesing (RWTH-Aachen)</li><li>Prof. Burkhard Corves (RWTH-Aachen)</li><li>Prof. Izabella Lubowiecka (Gdańsk University of Technology)</li></ul>The paper was selected for presentation in the prestigious main-hall session of the conference, which featured only a select number of contributed papers alongside international keynote lectures and invited talks. The presentation generated discussion and questions from senior researchers in the topology optimization community.Key Contributions:<ul><li>Multi-scaled elliptical hyperelastic inclusion model for nonlinear wave cloaking</li><li>Impedance-matched design to isolate nonlinear effects</li><li>Gradient-free inverse optimization framework using transient finite element models</li><li>Simultaneous control of inclusion dimension, rotation, and spatial distribution</li><li>Complete suppression of transmitted higher harmonics for nonlinear invisibility</li></ul>Conference Details:<ul><li>Conference: 1st International and 7th National Conference on Multidisciplinary Design, Analysis, and Optimization (iNCMDAO 2024)</li><li>Organizers: Indian Institute of Science (IISc), Bengaluru and Aeronautical Society of India (AeSI)</li><li>Venue: J. N. Tata Auditorium, IISc Bangalore</li><li>Dates: December 16–18, 2024</li><li>Conference website: <a href="https://incmdao2024.iisc.ac.in/" target="_blank" rel="noreferrer">https://incmdao2024.iisc.ac.in</a></li></ul>Research portfolio: <a href="https://sites.google.com/view/pravinkumarghodake/research" target="_blank" rel="noreferrer">https://sites.google.com/view/pravinkumarghodake/research</a>Presentation Documentation: The official iNCMDAO 2024 Full Programme is included as a supplementary file, documenting the session placement (S1 T1 — Topology Optimization, Main Hall), date (17 December 2024), and time slot (11:00–11:15 AM) of this paper. A photograph of the author presenting the companion paper at the same conference is available in the related record [DOI of Paper 2 - <a href="https://doi.org/10.6084/m9.figshare.34037958" target="_blank" rel="noreferrer">https://doi.org/10.6084/m9.figshare.34037958</a>].Keywords: inverse design, nonlinear phononic metamaterials, nonlinear wave cloaking, elastic invisibility, topology optimization, harmonic scattering, Murnaghan hyperelastic inclusions, gradient-free optimization, iNCMDAO 2024, IISc Bangalore 2026-10-01T03:57:21Z Text Conference contribution 10.6084/m9.figshare.34037976.v1 https://figshare.com/articles/conference_contribution/Inverse_Design_of_Nonlinear_Phononic_Metamaterials_for_Nonlinear_Wave_Cloaking_iNCMDAO_2024_Conference_Paper_IISc_Bangalore_/34037976 CC BY 4.0