Experimental analysis on metamaterials boundary layers by means of a pantographic structure under large deformations

Autor:	Marco Laudato, Luca Manzari, Peter Göransson, Ivan Giorgio, Bilen Emek Abali
Rok vydání:	2022
Předmět:	Metamaterial dynamics Pantographic sheets Second gradient materials Digital image correlation analysis Applied Mechanics Teknisk mekanik Mechanics of Materials Mechanical Engineering General Materials Science Condensed Matter Physics Civil and Structural Engineering
Zdroj:	Mechanics Research Communications. 125:103990
ISSN:	0093-6413
DOI:	10.1016/j.mechrescom.2022.103990
Popis:	In this work, the dynamical behavior of a pantographic structure undergoing large deformations is analyzed. A harmonic force is applied on the structure, while its motion in time is recorded by means of a high-speed camera system. The resulting displacement field is obtained via the digital image correlation (DIC) method for the whole domain. A parametric study with respect to the amplitude of the imposed force exhibits the appearance of non-linear effects in the system response as well as the presence of a so-called boundary layer region. Such geometric nonlinearities are of paramount interest for studying the accuracy of a potential computational model. Boundary layers are known to be effected by the microstructure, but their roles in the system response are yet to be comprehended. The experimental results obtained in this work may be used as a benchmark case in modeling metamaterials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd83278796e9ee97401942c43c66c404 https://doi.org/10.1016/j.mechrescom.2022.103990 Zobrazit plný text záznamu Full Text from ScienceDirect