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oai:figshare.com:article/34037958 2026-10-01T04:01:18Z category_26536 category_26770 category_26779 category_26764 category_28813 category_30289 category_26755 category_30142 category_26773 category_29776 category_29212 category_25789 category_29821 category_24964 category_30127 category_29812 category_29224 category_29815 category_26533 category_29011 category_24979 category_25012 category_24973 category_24994 category_25168 item_type_14 month_year_10_2026

Sculpting Linear and Nonlinear Elastic Waves: Exploring Inverse Design Potentials — iNCMDAO 2024 Conference Paper (IISc Bangalore) Pravinkumar Ghodake (3701242) Engineering education Numerical modelling and mechanical characterisation Mechanical engineering not elsewhere classified Mechanical engineering asset management 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 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 Design not elsewhere classified Design history, theory and criticism Models and simulations of design Theory and design of materials inverse design inverse design method inverse design strategy inverse design methods inverse design algorithm inverse design validity inverse design methodology inverse design procedure Inverse Design Approach Properties inverse design framework inverse design process inverse design approach elastic wave manipulation linear metamaterials nonlinear metamaterials Nonlinear Metamaterials level-set shape optimization multi-material metamaterials gradient-free optimization Nelder-Mead transient finite element analysis COMSOL wave sculpting harmonic control multifunctional metamaterials iNCMDAO 2024 IISc Bangalore Tata Memorial Auditorium topology optimization solid mechanics 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: "Sculpting Linear and Nonlinear Elastic Waves: Exploring Inverse Design Potentials"Abstract: This work establishes a robust time-domain inverse design framework to sculpt high-frequency (MHz) linear and nonlinear elastic waves. Moving beyond conventional eigenvalue sweeps and transfer matrix limits, the methodology implements a level-set shape optimization routine guided by gradient-free algorithms. The platform concurrently optimizes individual layer widths and multi-material stacking sequences for finite-length periodic arrays under realistic boundary conditions, creating highly tunable multifunctional metamaterials capable of directional, mode-independent wave manipulation.Session Details:<ul><li>Track: Topology Optimization (Track 1)</li><li>Session: S4 T1 — Session 4, Track 1</li><li>Venue: Main Hall, J. N. Tata Auditorium, IISc Bangalore</li><li>Date: 18 December 2024</li><li>Time slot: 15:00 PM – 15:15 PM</li><li>Paper ID: 9</li><li>Session Chair: Indira Narayanaswamy</li><li>Co-Chair: Pragya Tripathi</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. This is a rare honor for a research scholar, as the main-hall sessions are typically reserved for invited talks and select contributed papers. The session featured the closing keynote slot on the final day of the conference.The presentation was attended by leading international researchers, including:<ul><li>Prof. Kalyanmoy Deb (Michigan State University)</li><li>Prof. Sankaran Mahadevan (Vanderbilt University)</li><li>Prof. Gil Ho Yoon (Hanyang University)</li><li>Prof. Wei Chen (Northwestern University)</li><li>Prof. Faez Ahmed (MIT)</li><li>Prof. Krishnan Suresh (University of Wisconsin, Madison)</li><li>Prof. Ole Sigmund (Denmark Technical 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></ul>The talk generated discussion and questions from senior researchers in the optimization and metamaterials communities.Key Contributions:<ul><li>Time-domain inverse design framework for linear and nonlinear elastic wave sculpting</li><li>Level-set shape optimization for simultaneous layer-width and multi-material stacking design</li><li>Finite-length periodic arrays under realistic boundary conditions (no infinite-periodic idealization)</li><li>Gradient-free optimization (Nelder-Mead)</li><li>Multifunctional, direction-dependent, mode-independent wave manipulation</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: A photograph of the author presenting this paper is included here, showing the presentation slide with the paper title, author name, and affiliation. The presentation was delivered in the main hall of the J. N. Tata Auditorium, IISc Bangalore, on 18 December 2024, in Session S4 T1 (Topology Optimization). <a href="https://doi.org/10.6084/m9.figshare.34037976" target="_blank" rel="noreferrer">https://doi.org/10.6084/m9.figshare.34037976</a>Keywords: inverse design, elastic wave manipulation, level-set shape optimization, multi-material metamaterials, gradient-free optimization, wave sculpting, iNCMDAO 2024, IISc Bangalore 2026-10-01T04:01:18Z Text Conference contribution 10.6084/m9.figshare.34037958.v2 https://figshare.com/articles/conference_contribution/Sculpting_Linear_and_Nonlinear_Elastic_Waves_Exploring_Inverse_Design_Potentials_iNCMDAO_2024_Conference_Paper_IISc_Bangalore_/34037958 CC BY 4.0