Design and demonstration of a high authority shape morphing structure

Lucato, Sergio L. dos Santos e; Wang, J; Maxwell, Peter T.; McMeeking, R. M.; Evans, A.G.

doi:10.1016/j.ijsolstr.2004.02.012

Cited by 72 publications

(44 citation statements)

References 7 publications

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“…Recent studies have shown the two-dimensional kagome lattice, shown in Figure 1, to be a prime candidate to form the backbone of active structures [Santos e Lucato et al 2004;Hutchinson et al 2003;Symons et al 2005a;2005b]. If linear actuators replace some members of the truss, significant global macroscopic shape changes can be achieved with a relatively small number of actuators.…”

Section: Introductionmentioning

confidence: 99%

“…To date, actuators manufactured are predominantly one-dimensional, where their capabilities are confined to extending and contracting along or rotating about one axis; active truss structures provide a way of incorporating linear actuators into a structure. The paper will focus on the structural response of the truss rather than methods of actuation; possible actuators are described in [Santos e Lucato et al 2004;Symons et al 2005a;2005b]. Hutchinson et al [2003] has shown that the planar kagome lattice can be actuated with minimal internal resistance while maintaining overall stiffness.…”

Section: Introductionmentioning

confidence: 99%

“…The two experimental active kagome lattice structures described in the literature have s = 0.007 [Santos e Lucato et al 2004] and s 0.0085 [Symons et al 2005a;2005b].…”

Section: Introductionmentioning

confidence: 99%

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Single member actuation of kagome lattice structures

Leung

Guest

2007

JOMMS

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The two-dimensional kagome lattice has been shown to be a promising basis for active shape-changing structures, having both low actuation resistance and high passive stiffness. Activation of some members results in a global macroscopic shape change. Small deformation models show that the kagome lattice's properties are critically dependent on its initial geometry. This paper investigates the fundamental actuation properties of a kagome lattice subject to single-member actuation, particularly when geometric nonlinearity is introduced with large actuation strains. Actuation resistance is found to be lowered with expansive actuation; a limiting peak actuation stiffness is observed when the actuator is flexible. Conversely, actuation resistance is found to increase with contractile actuation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Single member actuation of kagome lattice structures

Leung

Guest

2007

JOMMS

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“…The Kagome based high authority shape morphing structure (or Kagome structure in short) [5] is a kind of sandwich truss-cored plate. In contrast to other sandwich truss-cored plates that have two solid face sheets, one face sheet of the Kagome structure is replaced by a planar Kagome truss while the other face sheet is still a solid one.…”

Section: Kagome Sandwich Structurementioning

confidence: 99%

“…Moreover, the surface of the plate will be changed. The Kagome sandwich structure [5] introduced in this chapter consists of a solid face sheet, a tetrahedral core and a planar Kagome truss as the back-plane. Because one face sheet of the Kagome structure has been replaced by a planar Kagome truss, the transverse displacement of its solid face sheet can be realized just by the in-plane tension-compression actuation forces if some specific rods in the planar Kagome truss are replaced by linear actuators.…”

Section: Introductionmentioning

confidence: 99%