Ultra-efficient wound composite truss structures

Benjamin K.S. Woods, Ioan Hill, Michael I. Friswell

Research output: Contribution to journalArticle (Academic Journal)

15 Citations (Scopus)
415 Downloads (Pure)

Abstract

This paper presents the design, analysis, manufacturing, experimental testing, and multiobjective optimization of a new family of ultra-efficient composite truss structures. The continuously wound truss concept introduced here is a versatile, low cost and scalable method of manufacturing truss structures based on a simple winding process. A prototype truss configuration is shown and experimentally characterized under torsion and three point bending loads. A large deformation implementation of the direct stiffness method is shown to provide good prediction of the stiffness properties of the prototype truss. This model is extended to include strength prediction with multiple failure modes. The design space achievable with these truss structures is then explored through multiobjective optimization using the NSGA II genetic algorithm. These continuously wound truss structures have the potential to provide between one and two orders of magnitude increase in structural efficiency compared to existing carbon fiber composite tubes.
Original languageEnglish
Pages (from-to)111-124
Number of pages14
JournalComposites Part A: Applied Science and Manufacturing
Volume90
Early online date29 Jun 2016
DOIs
Publication statusPublished - Nov 2016

Structured keywords

  • Bristol Composites Institute ACCIS

Keywords

  • Filament winding
  • Numerical analysis
  • Mechanical testing
  • Mechanical properties

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