Design and analysis of strut-based lattice structures for vibration isolation

Syam, Wahyudin P. and Jianwei, Wu and Zhao, Bo and Maskery, Ian and Elmadih, Waiel and Leach, Richard (2017) Design and analysis of strut-based lattice structures for vibration isolation. Precision Engineering . ISSN 0141-6359 (In Press)

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Abstract

This paper presents the design, analysis and experimental verification of strut-based lattice structures to enhance the mechanical vibration isolation properties of a machine frame, whilst also conserving its structural integrity. In addition, design parameters that correlate lattices, with fixed volume and similar material, to natural frequency and structural integrity are also presented. To achieve high efficiency of vibration isolation and to conserve the structural integrity, a trade-off needs to be made between the frame’s natural frequency and its compressive strength. The total area moment of inertia and the mass (at fixed volume and with similar material) are proposed design parameters to compare and select the lattice structures; these parameters are computationally efficient and straight-forward to compute, as opposed to the use of finite element modelling to estimate both natural frequency and compressive strength. However, to validate the design parameters, finite element modelling has been used to determine the theoretical static and dynamic mechanical properties of the lattice structures. The lattices have been fabricated by laser powder bed fusion and experimentally tested to compare their static and dynamic properties to the theoretical model. Correlations between the proposed design parameters, and the natural frequency and strength of the lattices are presented.

Item Type: Article
Keywords: Additive manufacturing; Design; Lattice structures; Vibration isolation; Natural frequency
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: 10.1016/j.precisioneng.2017.09.010
Depositing User: Eprints, Support
Date Deposited: 25 Sep 2017 13:45
Last Modified: 15 Oct 2017 08:59
URI: http://eprints.nottingham.ac.uk/id/eprint/46711

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