Li, Kan, Seiler, Philipp E., Deshpande, Vikram S., Fleck, Norman A. (2021) Regulation of notch sensitivity of lattice materials by strut topology. International Journal of Mechanical Sciences, 192 . Article Number 106137. (doi:10.1016/j.ijmecsci.2020.106137) (KAR id:89116)
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Official URL: https://doi.org/10.1016/j.ijmecsci.2020.106137 |
Abstract
We propose a local reinforcement technique for lattices in the vicinity of a stress-raiser such as a notch, in order to elevate the macroscopic strength and ductility. A spatially non-uniform waviness distribution of sinusoidally-shaped struts is assumed in the vicinity of the notch, and the sensitivity of macroscopic tensile response to strut waviness distribution is studied by finite element analysis. Optimized lattice structures are determined in order to maximise the macroscopic tensile strength or ductility from these various strut waviness distributions. Both hexagonal and triangular lattices are studied as these geometries are representative of bending-dominated and stretching-dominated lattices, respectively.
Item Type: | Article |
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DOI/Identification number: | 10.1016/j.ijmecsci.2020.106137 |
Uncontrolled keywords: | lattice materials, ductile, tensile strength, graded wavy, defect sensitivity |
Subjects: | T Technology > TJ Mechanical engineering and machinery |
Divisions: | Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts |
Depositing User: | Philipp Seiler |
Date Deposited: | 09 Jul 2021 20:17 UTC |
Last Modified: | 09 Dec 2022 08:47 UTC |
Resource URI: | https://kar.kent.ac.uk/id/eprint/89116 (The current URI for this page, for reference purposes) |
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