Plenary Speakers

Prof. Guoliang Huang

Prof. Guoliang Huang

Mechanical and Aerospace Engineering, University of Missouri, USA
Speech Title: 2D Transformation Elasticity for Perfect Wave Cloaking

Abstract: While transformation optics and acoustics have made great strides, their elastic counterpart remained impeded by its tensorial character. Indeed, starting with a standard elastic material and applying a curvilinear change of coordinates, the outcome Lagrangian did not seem to correspond to any known elastic materials. This problem is known as “form invariance” (or lack thereof). In this talk, we report on the first designs of elastic materials whose Lagrangians are form invariant. Such materials are “polar” in the sense that they exhibit torque-induced asymmetric Cauchy stresses. They are also “degenerate” in that they admit stressless deformation modes. We explore recent theoretical progress, for conformal transformations in particular, and comment on numerical and experimental demonstrations of invisibility.

Biography: Dr. Guoliang Huang is currently a Huber and Hellen 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, 4 book chapters and more than 140 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.). He serves as associate editor of Wave Motion and specialty chief editor in the Physical Acoustics and Ultrasonics section of Frontiers in Physics.

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