Numerical study on the compressive responses of bcc hollow truss lattice structures

Guixiang Zhao, Wenyi Yan

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

Metallic cellular lattice structures exhibit high compressive strength to mass ratio. By replacing solid trusses with hollow ones, the compressive strength to mass ratio increases even more due to the better plastic buckling resistance of hollow trusses. The compressive behaviour of BCC hollow truss lattice structures was investigated in this research. The finite element method and dimensional analysis were conducted to examine the influence of lattice structure parameters, including the solid material properties and the geometry dimensions of the unit cells, on their overall compressive behaviour. The result shows that the mechanical properties of a hollow lattice structure can be influenced by both solid material property and structure geometry significantly. A hollow lattice structure can fail either in bulking mode or yielding mode. The condition for altering the domination of the failure mode was also identified. A formula was established to predict the compressive behaviour of BCC hollow truss lattice structure.

Original languageEnglish
Title of host publication9th Australasian Congress on Applied Mechanics, ACAM 2017
PublisherNational Committee on Applied Mechanics
ISBN (Electronic)9781925627022
Publication statusPublished - 1 Jan 2017
EventAustralasian Congress on Applied Mechanics 2017 - University of New South Wales, Sydney, Australia
Duration: 27 Nov 201729 Nov 2017
Conference number: 9th
https://acam9.com.au/

Publication series

Name9th Australasian Congress on Applied Mechanics, ACAM 2017
Volume2017-November

Conference

ConferenceAustralasian Congress on Applied Mechanics 2017
Abbreviated titleACAM 2017
CountryAustralia
CitySydney
Period27/11/1729/11/17
Internet address

Keywords

  • Failure analysis Lattice structure Finite element analysis

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