E-Thesis 351 views 106 downloads
Mechanics of Micro-Architected Lattice Structures / FRANCES ARAGO
Swansea University Author: FRANCES ARAGO
Abstract
Honeybees construct nests that consist of tessellated hexagonal prismatic structures. The bees develop a linear succession of tetrapod structures that serve as the nest’s foundation in the initial stage of construction. This natural hexagonal lattice structure has been the epitome of extensive aeros...
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Swansea, Wales, UK
2023
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| Institution: | Swansea University |
| Degree level: | Master of Research |
| Degree name: | MSc by Research |
| Supervisor: | Shaw, Alexander |
| URI: | https://cronfa.swan.ac.uk/Record/cronfa63894 |
| Abstract: |
Honeybees construct nests that consist of tessellated hexagonal prismatic structures. The bees develop a linear succession of tetrapod structures that serve as the nest’s foundation in the initial stage of construction. This natural hexagonal lattice structure has been the epitome of extensive aerospace applications. And, has particularly been widely used on aircraft control surfaces as they provide an ideal set of mechanical properties; minimal density and ability to withstand high magnitudes of compressive and shear force. This paper analyses this hexagonal lattice configuration using theoretical analysis and simulations. It first analyses the lattice structure by breaking it down into three individual components somewhat resembling the constructional stages in which the nests are developed: cantilever beam, unit cell which is initially the tetrapod structure, and the complete system of the lattice itself. In further chapters, refined geometries, namely stepped and quadratic lattice of the honeycomb, are then analysed with the objective of enhancing its strength to weight ratio, this is again analysed through the same bottom-up approach and procedure. Two approaches are implemented in the enhancement procedure. The obtained numerical results are then reviewed through simulations using multiple computer-aided software, Solidworks and ANSYS where the mechanical properties are established and compared. |
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| Keywords: |
Lattice, Honeycomb |
| College: |
Faculty of Science and Engineering |