Design optimization and dynamic analysis of a tensegrity-based footbridge

Ali, Nizar Bel Hadj; Rhode-Barbarigos, Landolf; Albi, Alberto A. Pascual; Smith, Ian F. C.

doi:10.1016/j.engstruct.2010.08.009

Cited by 97 publications

(31 citation statements)

References 31 publications

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“…The deployable tensegrity footbridge is composed of four identical pentagonal ring modules connected together in a "hollow-rope" system, where the empty space in their center is used as walking space with the addition of a deck. The hollow-rope tensegrity system was found viable for a tensegrity footbridge [29,30]. However, clustered cables, spring elements and deployment were not taken into account.…”

Section: The Tensegrity-ring Footbridgementioning

confidence: 99%

Design Aspects of a Deployable Tensegrity-Hollow-rope Footbridge

Rhode-Barbarigos

Ali

Motro

et al. 2012

International Journal of Space Structures

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Tensegrity structures are composed of cables and struts in a pre-stressed self-equilibrium. Although tensegrity first appeared in the 1950s, it is seldom used in civil engineering. This paper focuses on the design aspects of a deployable tensegrity-hollow-rope footbridge. Deployment is usually not a critical design case for traditional deployable structures. However, for tensegrity systems deployment may be critical due to the actuation required. In this paper, deployment is investigated in a general design framework. The influence of clustered (continuous) cables and spring elements in statics and dynamics is studied. Finally, actuation schemes are explored to identify cases where deployment becomes a critical design case. For this configuration, deployment is a critical design case when the structure has spring elements and continuous cables.

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Section: The Tensegrity-ring Footbridgementioning

confidence: 99%

Design Aspects of a Deployable Tensegrity-Hollow-rope Footbridge

Rhode-Barbarigos

Ali

Motro

et al. 2012

International Journal of Space Structures

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“…Their internal empty ring space is used as walking space with the addition of a deck. Previous work by the authors revealed that tensegrity-ring modules are viable structural systems for a footbridge application Rhode-Barbarigos et al 2010). Based on the deployability of ring modules, the structural system of the tensegrity-ring bridge can be extended for a deployable footbridge application.…”

Section: Tensegrity-ring Modules and Footbridge Applicationmentioning

confidence: 99%

Mechanism-Based Approach for the Deployment of a Tensegrity-Ring Module

Rhode-Barbarigos

Schulin²,

Ali

et al. 2012

J. Struct. Eng.

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“…Design optimization of the tensegrity bridge is performed using member dimensions and selfstress level as design variables following a procedure described in Bel Hadj Ali et al [28]. Struts are separated into two design groups: diagonal and intermediate struts.…”

Section: Design Characteristics Of the Tensegrity Bridgementioning

confidence: 99%

Configuration of control system for damage tolerance of a tensegrity bridge

Korkmaz

Ali

Smith

2012

Advanced Engineering Informatics

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Tensegrity structures are spatial, discrete and lightweight structures that are composed of struts in compression and pre-stressed cables. Stability is provided by the self-stress state between elements independently of external actions. Tensegrity structures are attractive due to their potential for deployability, ease of tuning and high precision control. Since tensegrity structures have highly coupled behavior, placement of actuators is a primary concern when designing active control systems. This study investigates the active control performance of cable members of a tensegrity bridge. The actuation efficiencies of cable members are evaluated through a multi-criteria approach. The configuration of the control system is thus identified through outranking candidate active members. A multi-objective damage tolerance strategy is then proposed and optimally directed control solutions are identified using stochastic search. Case studies for several damage scenarios are examined to validate results. The most efficient active cable configuration is compared with that needed for deployment. This study is divided into two phases. After the description of a 16m-span tensegrity bridge, optimally directed locations of active cables are determined in the first phase. Secondly, a procedure to ensure damage tolerance of the structure is proposed. The multi-objective self-repair procedure provides damage tolerance minimizing both maximum deflections in the structure and stresses in the structural members. Results indicate that the control strategy for deployment is a near-optimal solution for damage tolerance. The proposed methodology is applicable to a range of complex active structures.

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Design optimization and dynamic analysis of a tensegrity-based footbridge

Cited by 97 publications

References 31 publications

Design Aspects of a Deployable Tensegrity-Hollow-rope Footbridge

Design Aspects of a Deployable Tensegrity-Hollow-rope Footbridge

Mechanism-Based Approach for the Deployment of a Tensegrity-Ring Module

Configuration of control system for damage tolerance of a tensegrity bridge

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