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Article

Low Thermal Expansion Machine Frame Designs Using Lattice Structures

1
Manufacturing Metrology Team, Faculty of Engineering, University of Nottingham, Nottingham NG8 1BB, UK
2
Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham NG8 1BB, UK
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Author to whom correspondence should be addressed.
Academic Editors: Georgios E. Stavroulakis, Loucas Papadakis and Ioannis Ntintakis
Appl. Sci. 2021, 11(19), 9135; https://doi.org/10.3390/app11199135
Received: 11 August 2021 / Revised: 22 September 2021 / Accepted: 24 September 2021 / Published: 30 September 2021
In this work, we investigated tessellating cellular (or lattice) structures for use in a low thermal expansion machine frame. We proposed a concept for a lattice structure with tailorable effective coefficient of thermal expansion (CTE). The design is an assembly of two parts: a lattice outer part and a cylindrical inner part, which are made of homogenous materials with different positive CTEs. Several lattice design variations were investigated and their thermal and mechanical performance analysed using a finite element method. Our numerical models showed that a lattice design using Nylon 12 and ultra-high molecular weight polyethylene could yield an effective in-plane CTE of 1 × 10−9 K−1 (cf. 109 × 10−6 K−1 for solid Nylon 12). This paper showed that the combination of design optimisation and additive manufacturing can be used to achieve low CTE structures and, therefore, low thermal expansion machine frames of a few tens of centimetres in height. View Full-Text
Keywords: coefficient of thermal expansion; lattice structure; metrology frame; finite element analysis; additive manufacturing coefficient of thermal expansion; lattice structure; metrology frame; finite element analysis; additive manufacturing
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MDPI and ACS Style

Juasiripukdee, P.; Maskery, I.; Ashcroft, I.; Leach, R. Low Thermal Expansion Machine Frame Designs Using Lattice Structures. Appl. Sci. 2021, 11, 9135. https://doi.org/10.3390/app11199135

AMA Style

Juasiripukdee P, Maskery I, Ashcroft I, Leach R. Low Thermal Expansion Machine Frame Designs Using Lattice Structures. Applied Sciences. 2021; 11(19):9135. https://doi.org/10.3390/app11199135

Chicago/Turabian Style

Juasiripukdee, Poom, Ian Maskery, Ian Ashcroft, and Richard Leach. 2021. "Low Thermal Expansion Machine Frame Designs Using Lattice Structures" Applied Sciences 11, no. 19: 9135. https://doi.org/10.3390/app11199135

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