Metamaterials & Metastructures

Projects

Nonlinear Dynamics in Lattices of Multi-stable Elements

Lattices of bistable elements are known to support highly localized, nondispersive waves (solitary waves). In this research, we seek to uncover extreme nonlinear phenomena by breaking the periodicities in 1-D lattices and characterize their dynamics analytically and experimentally with emphasis on applications to energy harvesting and transmission. We harness the complex dynamics in such lattices to create mechanical metamaterials exhibiting extreme mechanical properties such as unidirectionality of wave propagation or frequency independent energy harvesting.

Students

• Myungwon Hwang (MEPhD)
• Lingwei Ming (BSME)

Publications

• M. Hwang, A. F. Arrieta. Energy harvesting in lattices of bi-stable units. ASME Conference on Smart Structures, Adaptive Structures and Intelligent Systems (SMASIS2017), Snowbird, Utah, USA, September 18 – 20, 2017.
• M. Hwang, A. F. Arrieta. Nonlinear dynamics of a lattice of bi-stable units with defects. SPIE Smart Structures/NDE: Health Monitoring of Structural and Biological Systems XI Portland, Oregon, 25 – 29 of March.
• M. Hwang, A. F. Arrieta. Nonlinear dynamics of lattices of bi-stable units with spatially varying properties. American Mathematical Society (AMS) 2016 Fall Eastern Sectional Meeting, Brunswick, Maine, September 24 – 25, 2016.
• N. Nadkarni, A. F. Arrieta, D. M. Kochmann, C. Daraio. Unidirectional Transition Waves in Bistable Lattices. Physical Review Letters, 116(24), 244501(5), 2016. DOI: 10.1103/PhysRevLett.116.244501