Dynamical Metamaterials

Metamaterials with tunable dynamical properties (TU/e)

• Project leaders: dr. Varvara Kouznetsova (TU/e) & prof.dr. Marc Geers (TU/e), Department of Mechanical Engineering, Mechanics of Materials
• Postdoc: dr. Priscilla Brandão Silva (now Research Scientist, Philips)
• International experts: prof. Michael J. Leamy (George W. Woodruff School of Mechanical Engineering, Georgia Tech); prof. Katia Bertoldi (Harvard University); prof. Norman Fleck (Centre for Micromechanics, University of Cambridge); prof. John Willis (Emeritus Professor of Theoretical Solid Mechanics, University of Cambridge, Visiting Professor of Mathematics, University of Bath)

Presentation (Pdf file, 2 MB) held by dr. Varvara Kouznetsova at the Kick-off Symposium 'Dutch Materials 2015', 6 October 2015.

Keywords

Metamaterials, Nonlinear Dynamics, Local Resonance, Wave Propagation, Hyperelasticity, Energy Exchange, Computational Homogenization, Multiple Scales

Papers

• ‘Acoustic metamaterials: Metamaterials for wave control and manipulation by exploring nonlinearity’ by Priscilla B. Silva, Tim van Nuland, Thijs S. van Loon, Valentina Zega, Michael J. Leamy, Marc. G. D. Geers, and Varvara G. Kouznetsova, Innovative Materials 4, 2018. 
  
• ‘Nieuwe akoestische metamaterialen voor golfmanipulatie door onderzoek naar niet-lineariteit’ door Priscilla B. Silva, Tim van Nuland, Thijs S. van Loon, Valentina Zega, Michael J. Leamy, Marc. G. D. Geers, en Varvara G. Kouznetsova, Innovatieve Materialen 4, 2018.
• ‘Emergent Subharmonic Band Gaps in Nonlinear Locally Resonant Metamaterials’ by Priscilla B. Silva, Michael J. Leamy, Marc. G. D. Geers, and Varvara G. Kouznetsova, in submission, 2018.
• ‘Transient Analysis of Nonlinear Locally Resonant Metamaterials via Computational Homogenization’ by Tim van Nuland, Priscilla B. Silva, Ashwin Sridhar, Varvara G. Kouznetsova, and Marc. G. D. Geers, submitted, 2018.
•  ‘Wave and Vibration Analysis of Rotating Periodic Structures by Wave-Based Methods’ by Danilo Beli, Priscilla B. Silva, Jean-Mathieu Mencik, and José Roberto de F. Arruda. In: Cavalca K., Weber H. (eds) Proceedings of the 10th International Conference on Rotor Dynamics – IFToMM Vol. 2. IFToMM 2018. Mechanisms and Machine Science 61 (2019): 518-529, Springer, Cham. DOI: 10.1007/978-3-319-99268-6_36
• ‘A projection-based model reduction strategy for the wave and vibration analysis of rotating periodic structures’ by Danilo Beli, Jean-Mathieu Mencik, Priscilla B. Silva, and José Roberto de F. Arruda. Computational Mechanics (2018): 1-18. DOI: 10.1007/s00466-018-1576-7
• ‘Mechanical circulator for elastic waves by using the nonreciprocity of flexible rotating rings’ by Danilo Beli, Priscilla B. Silva, and José Roberto de F. Arruda. Mechanical Systems and Signal Processing 98 (2018): 1077-1096. DOI: 10.1007/978-3-319-99268-6_36
• ‘On the unique features of mechanical metamaterials with nonlinear local oscillators’ by Priscilla B. Silva, Varvara G. Kouznetsova, and Marc G. D. Geers. The Journal of the Acoustical Society of America, 141(5) (2017): 3744-3744. DOI: 10.1121/1.4988245

Abstract

The development of metamaterials enables to engineer materials with extraordinary features, beyond the traditional limits. In the linear dynamic regime, metamaterials have already enabled a wide range of new functionalities, such as cloaking, super-lenses, and signal filtering. The consideration of nonlinearity has the potential to bring a myriad of new opportunities for metamaterials. Within the 4TU.High-Tech Materials research program, we are developing metamaterials with nonlinear resonant inclusions. Results of this research show emergent dynamic features which may enable tunability, new mechanisms of sound and vibration attenuation, and the realization of a “mechanical diode”. Besides, efficient computational schemes are being developed for optimal analysis of the emergent metastructure design.   

Research Outlook

Metamaterials with nonlinear local interaction (Pdf file)

Short Biography Priscilla Brandão Silva

Born in Rio de Janeiro, Brazil, Priscilla has always been curious and passionate about Science and Technology.

Priscilla got the Bachelor degree in Mechanical Engineering at the University of Campinas, Brazil. For being the best student among mechanical engineering undergraduates in 2010, she was awarded the Merit Diploma by the Institute of Engineering in Brazil. In 2015, she got the Ph.D. degree at the University of Campinas (Brazil) being advised by Prof. José Roberto de F. Arruda and Prof. Jean-Mathieu Mencik. In her thesis, she contributed to the development of a numerical technique for the computation of the dynamic response of structures involving periodic components using a wave-based approach. During her thesis, she did research internships at the University of Auckland, in New Zealand, where she collaborated with Prof. Brian Mace, and at INSA Centre Val de Loire, in France, with Prof. Jean-Mathieu Mencik, her co-advisor. Her thesis was awarded the best thesis in 2015 of the Faculty of Mechanical Engineering at the University of Campinas, Brazil.

After her Ph.D., she became Assistant Professor in the Department of Mechanical Engineering at the Federal University of Ceará, in Brazil. Her passion to contribute to the society with the development of new technologies led her to a new challenge and full-time research experience. Funded by the 4TU.High-Tech Materials research program, Priscilla is currently investigating a new generation of metamaterials by exploring the nonlinear dynamics of embedded microstructures at Eindhoven University of Technology (TU/e, The Netherlands). This research is conducted within the Mechanics of Materials group of TU/e with dr. Varvara Kouznetsova and Prof. Marc Geers, and in collaboration with Prof. Michael J. Leamy from Georgia Tech, USA.

Personal website
ResearchGate
GoogleScholar

Conferences / Presentations

2016
13 October - 4TU.HTM Dutch Materials 2016, Utrecht, The Netherlands

2017
18 May - Waves 2017, Minneapolis, USA
27 June - Acoustics 2017, Boston, USA
13 October - 4TU.HTM Dutch Materials 2017, Utrecht, The Netherlands
11 December - Meeting Materials 2017, M2i, Noordwijkerhout, The Netherlands

2018
1 June - Engineering Mechanics Institute Conference, MIT, Cambridge, USA
5 July - European Solid Mechanics Conference, Bologna, Italy
9 July - European Workshop on Acoustic & Mechanical Metamaterials, Imperial College, London, UK

       Presenting at EMI 2018, MIT, USA