TY - JOUR
T1 - Compression and buckling of microarchitectured Neovius-lattice
AU - Abueidda, Diab W.
AU - Elhebeary, Mohamed
AU - Shiang, Cheng Shen (Andrew)
AU - Abu Al-Rub, Rashid K.
AU - Jasiuk, Iwona M.
N1 - Funding Information:
The fabrication of the specimens was carried out in the Materials Research Laboratory Central Research Facilities, University of Illinois. The experimental testing was carried out in the Beckman Institute of Science and Technology, University of Illinois. The authors would like to thank Scott J. Robinson and Leilei Yin for technical support. I.J. would like to acknowledge the National Science Foundation grant MOMS-1926353 and the ZJU-UIUC Institute Research Program Funding.
Funding Information:
The fabrication of the specimens was carried out in the Materials Research Laboratory Central Research Facilities, University of Illinois. The experimental testing was carried out in the Beckman Institute of Science and Technology, University of Illinois. The authors would like to thank Scott J. Robinson and Leilei Yin for technical support. I.J. would like to acknowledge the National Science Foundation grant MOMS-1926353 and the ZJU-UIUC Institute Research Program Funding .
Publisher Copyright:
© 2020
PY - 2020/5
Y1 - 2020/5
N2 - New materials with enhanced properties are of high scientific and industrial interests. Microarchitectured cellular materials possess robust mechanical properties such as high strength-to-weight ratios due to their architectures and size effect appearing in metals and ceramics. In this study, we investigate the mechanical properties of a novel microlattice based on the Neovius surface, a member of the triply periodic minimal surfaces. We show that the Neovius-microlattice exhibits high uniaxial modulus, energy absorption, and strength due to its architecture, which is free of self-intersecting elements. The polymeric Neovius-microlattice deforms locally by two mechanisms: buckling and plastic yielding, while the brittle fracture is not observed. Also, we show that the mechanical properties of the Neovius-microlattice can be enhanced further by coating it with a ceramic (alumina) layer. Additionally, the nature of instability in these architectured materials (at the micro-scale, microns in dimensions) is explored through experiments and computational modeling. The two primary instability mechanisms, out-of-plane and in-plane buckling, in cellular materials, are distinguished. Such a study can pave the path for designing cellular materials that are stiff, strong, light, and buckling-resistant.
AB - New materials with enhanced properties are of high scientific and industrial interests. Microarchitectured cellular materials possess robust mechanical properties such as high strength-to-weight ratios due to their architectures and size effect appearing in metals and ceramics. In this study, we investigate the mechanical properties of a novel microlattice based on the Neovius surface, a member of the triply periodic minimal surfaces. We show that the Neovius-microlattice exhibits high uniaxial modulus, energy absorption, and strength due to its architecture, which is free of self-intersecting elements. The polymeric Neovius-microlattice deforms locally by two mechanisms: buckling and plastic yielding, while the brittle fracture is not observed. Also, we show that the mechanical properties of the Neovius-microlattice can be enhanced further by coating it with a ceramic (alumina) layer. Additionally, the nature of instability in these architectured materials (at the micro-scale, microns in dimensions) is explored through experiments and computational modeling. The two primary instability mechanisms, out-of-plane and in-plane buckling, in cellular materials, are distinguished. Such a study can pave the path for designing cellular materials that are stiff, strong, light, and buckling-resistant.
KW - Coating
KW - In-plane and out-of-plane buckling
KW - Microlattice
KW - Size effect
KW - Triply periodic minimal surfaces
KW - Two-photon polymerization
UR - http://www.scopus.com/inward/record.url?scp=85083317651&partnerID=8YFLogxK
U2 - 10.1016/j.eml.2020.100688
DO - 10.1016/j.eml.2020.100688
M3 - Article
AN - SCOPUS:85083317651
SN - 2352-4316
VL - 37
JO - Extreme Mechanics Letters
JF - Extreme Mechanics Letters
M1 - 100688
ER -