MECHANICAL & AEROSPACE ENGINEERING, SEOUL NATIONAL UNIVERSITY

Mechanical Metamaterials

Auxetics for wave & vibration control

As applying auxetic patterns into 2D or 3D curved structures, dynamic properties of structure also can be adjusted to specific purposes. Our team studies elastic wave propagation and vibration characteristics of the auxetic structure. We set effective properties which determine characteristics of a structure (ex: elastic stiffness tensor, eigen-frequency, Poisson's ratio, etc) to exhibit properties non-existing in nature, and suggest particular auxetic patterns to achieve effective properties. Based on FE simulation, elastic wave propagation and vibration characteristics are analyzed for various parameters of auxetic pattern and verified experimentally.