000014939 001__ 14939
000014939 005__ 20161115100206.0
000014939 04107 $$aeng
000014939 046__ $$k2016-08-21
000014939 100__ $$aXu, Hang
000014939 24500 $$aStiff and strong Octet lattice with tunable coefficient of thermal expansion

000014939 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014939 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014939 506__ $$arestricted
000014939 520__ $$2eng$$aIn this paper, we present two versions of a bi-material Octet lattice, and show that its coefficient of thermal expansion (CTE) can be regulated in designated spatial directions without compromising its structural efficiency. Proof-of-concept lattices are fabricated by laser cutting and assembled by a pretension snap-fit method. Via experiments, simulations and theory, we prove that their CTE can be tailored to low-to-zero or even negative. In particular, digital image correlation is used to measure the CTEs of the two versions of the Octet lattice, whereas asymptotic homogenization theory and finite element simulations are used to calculate their thermomechanical properties. The results are plotted into thermomechanical charts that illustrate the merit of the Octet lattices over other concepts existing in literature.

000014939 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014939 653__ $$a

000014939 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014939 720__ $$aXu, Hang
000014939 8560_ $$ffischerc@itam.cas.cz
000014939 8564_ $$s198283$$uhttps://invenio.itam.cas.cz/record/14939/files/TS.FS09-3.05.pdf$$yOriginal version of the author's contribution as presented on CD,  page 3450, code TS.FS09-3.05
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000014939 962__ $$r13812
000014939 980__ $$aPAPER