题目：Active Mechanical Metamaterials with Digital Circuits: Active Mechanics and Their Engineering Applications
时间：2023年4月29日 14:00-16:00
地点：771771威尼斯.Cm F310会议室
报告人：Prof. Guoliang Huang（美国密苏里大学）
邀请人：何清波 教授（振动、噪声、冲击研究所）
Biography
Dr. Guoliang Huang is currently a Huber and Helen Croft Chair professor of mechanical and aerospace
engineering at University of Missouri-Columbia. He received his Ph.D. degree from University of Alberta, Canada, in 2004. Dr. Huang’s research interests include wave propagation and mechanics in elastic/acoustic metamaterials and structural materials, topological and active mechanics, structural dynamics, vibration and sound wave mitigation. Dr. Huang’s research has been funded by NSF, Air Force of Scientific Research, Army Research Office, Office of Naval Research, DURIP, Department of Energy, NASA, and major industries. He has authored one book, 6 book chapters and more than 160 journal papers (include Nature Reviews Materials, Nature Communications, Proceedings of the National Academy of Sciences (PNAS), Advanced Materials, Physical Review Letters, Journal of Mechanics and Physics of Solids, et al.).
Abstract
Biological and artificial machinery systems have utilized the approach made by sensing, actuating, and information processing to adapt themselves to environmental changes, maintain dynamic equilibrium, and execute particular functions. Examples include octopuses that change their colors and shapes according to environments, a warm of ants that transport foods, smart thermostats, to self-driving cars. In this talk, we present how to take advantage of this approach to construct active mechanical metamaterials for enabling a range of unprecedent wave phenomena. The active mechanical metamaterials are composed of piezoelectric sensors and actuators connected with digital electronic circuits. The electrical degrees of freedom implemented allow for precisely and independently modulating mechanical properties through electromechanical coupling in the metamaterial. By developing theory, numerical simulations and experiments, we systematically demonstrate odd elasticity in 1D and 2D for achieving non-Hermitian wave control and novel engineering application.
