Characterization of thermal elastic moduli of anisotropic lattice metamaterials: designing dual-functional metamaterials with low thermal expansion and vibration mitigation capabilitiesShow others and affiliations
2024 (English)In: Proceedings of ISMA 2024 - International Conference on Noise and Vibration Engineering and USD 2024 - International Conference on Uncertainty in Structural Dynamics, KU Leuven, Departement Werktuigkunde , 2024, p. 1510-1517Conference paper, Published paper (Refereed)
Abstract [en]
This paper presents a method to characterize six anisotropic thermal moduli for lattice structures, enabling the estimation of full anisotropic thermal elastic moduli. The study focuses on a group of distorted Kelvin cells, generated by twisting the four-node faces, to explore the relationship between distortion, anisotropic thermal expansions, and dynamic responses. Through parametric studies, the anisotropic thermal moduli are characterized as functions of the twisting angles, revealing that thermal moduli related to compression decrease with increasing twisting angles, while those related to shearing, which do not exist in isotropic materials, are identified. Dynamic responses reveal complex modal shapes and coupling between longitudinal and transverse directions, enhancing vibration mitigation. The proposed lattices and methods offer a promising structure for assembling and designing dual-functional metamaterials, featuring customizable thermal elastic moduli, ease of space assembly, lightweight structure, and effective vibration mitigation capabilities.
Place, publisher, year, edition, pages
KU Leuven, Departement Werktuigkunde , 2024. p. 1510-1517
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-358130Scopus ID: 2-s2.0-85212219179OAI: oai:DiVA.org:kth-358130DiVA, id: diva2:1924755
Conference
31st International Conference on Noise and Vibration Engineering, ISMA 2024 and 10th International Conference on Uncertainty in Structural Dynamics, USD 2024, Leuven, Belgium, Sep 9 2024 - Sep 11 2024
Note
Part of ISBN 9789082893175]
QC 20250113
2025-01-072025-01-072025-01-13Bibliographically approved