TY - JOUR
T1 - Dynamic behaviour of auxetic gradient composite hexagonal honeycombs
AU - Boldrin, Luca
AU - Hummel, S
AU - Scarpa, Fabrizio
AU - Di Maio, Dario
AU - Lira, Cristian
AU - Ruzzene, M
AU - Remillat, Chrystel D L
AU - Lim, Teik-Cheng
AU - Rajasekaran, Ramesh
AU - Patsias, Sophoclis
PY - 2016/8/1
Y1 - 2016/8/1
N2 - The paper describes a vibroacoustics analysis of auxetic gradient honeycomb composite structures with hexagonal configurations. We examine two classes of gradient cellular layout - one with continuously varying internal cell angle, the other with gradient cell wall aspect ratio across the surface of the honeycomb panel. The structural dynamics behaviour of the two gradient honeycomb configurations is simulated using full-scale Finite Elements and Component Mode Synthesis (CMS) substructuring. Samples of the gradient honeycombs have been manufactured by means of 3D printing techniques, and subjected to modal analysis using scanning laser vibrometry. We observe a general good comparison between the numerical and the experimental results. A numerical parametric analysis shows the effect of the gradient topology upon the average mobility and general vibroacoustics response of these particular cellular structures.
AB - The paper describes a vibroacoustics analysis of auxetic gradient honeycomb composite structures with hexagonal configurations. We examine two classes of gradient cellular layout - one with continuously varying internal cell angle, the other with gradient cell wall aspect ratio across the surface of the honeycomb panel. The structural dynamics behaviour of the two gradient honeycomb configurations is simulated using full-scale Finite Elements and Component Mode Synthesis (CMS) substructuring. Samples of the gradient honeycombs have been manufactured by means of 3D printing techniques, and subjected to modal analysis using scanning laser vibrometry. We observe a general good comparison between the numerical and the experimental results. A numerical parametric analysis shows the effect of the gradient topology upon the average mobility and general vibroacoustics response of these particular cellular structures.
KW - Modal analysis
KW - Auxetic
KW - Honeycomb
KW - Gradient cellular structure
UR - http://www.scopus.com/inward/record.url?scp=84963945177&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2016.03.044
DO - 10.1016/j.compstruct.2016.03.044
M3 - Article (Academic Journal)
AN - SCOPUS:84963945177
SN - 0263-8223
VL - 149
SP - 114
EP - 124
JO - Composite Structures
JF - Composite Structures
ER -