An Introduction to Structural Mechanics for Architects

González, D. Porras Navarro

doi:10.1007/978-3-319-72935-0

Cited by 2 publications

(2 citation statements)

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“…This paper develops a continuum deformation framework for traffic coordination (CDFTC) in a finite motion space and applies CDFTC to LAUC. CDFTC applies principles of continuum mechanics [39] to achieve freely scalable UAS coordination in a finite airspace volume. CDFTC integrates the following two main layers: (i) Macroscopic coordination using Eulerian continuum mechanics and (ii) Microscopic coordination of clustered vehicles treated as particles of a virtual rigid body.…”

Section: A Contribution and Outlinementioning

confidence: 99%

Physics-Based Freely Scalable Continuum Deformation for UAS Traffic Coordination

Rastgoftar

Atkins

2020

IEEE Trans. Control Netw. Syst.

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This paper develops a novel physics-inspired traffic coordination approach and applies it to Unmanned Aircraft System (UAS) traffic management. We extend available physicsinspired approaches previously applied to 1-D traffic flow on highways and urban streets to support models of traffic coordination in higher dimension airspace for cases where no predefined paths exist. The paper considers airspace as a finite control volume while UAS coordination, treated as continuum deformation, is controlled at the airspace boundaries. By partitioning airspace into planned and unplanned spaces, the paper models nominal coordination in the planned airspace as the solution of a partial differential equation with spatiotemporal parameters. This paper also improves resilience to vehicle failures with a resilient boundary control algorithm to update the geometry of the planned space when UAS problems threaten safe coordination in existing navigable airspace channels. To support UAS coordination at the microscopic level, we propose clustering vehicles based on vehicle performance limits. UAS clusters, with each UAS treated as a particle of a virtual rigid body, use leader-follower containment to acquire the macroscopic desired trajectory.

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Section: A Contribution and Outlinementioning

confidence: 99%

Physics-Based Freely Scalable Continuum Deformation for UAS Traffic Coordination

Rastgoftar

Atkins

2020

IEEE Trans. Control Netw. Syst.

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“…Hook stated that: "As hangs the flexible chain, so -but inverted -will stand the rigid arch." The idea of Hook is attractive and straightforward if a hanging chain supports loads in tension when inverted, it will stand loads in compression [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Behaviour of Self-Form Segmental Concrete Masonry Arches

Abdulhameed¹,

Said²

2019

Preprint

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This research aims to introduce a new technique, off-site and self-form segmental concrete masonry arches fabrication, without the need of construction formwork or centering. The innovative construction method in the current study encompasses two construction materials forms the self-form masonry arches, wedge-shape plain concrete voussoirs, and Carbon Fibers Reinforced Polymers (CFRP) composites. The employment of CFRP fabrics was for two main reasons; bond the voussoirs and forming the masonry arches. However, CFRP proved to be efficient for strengthening the extrados of the arch rings under service loadings. An experimental test conducted on four sophisticated masonry arch specimens. Research parameters were using thicker keystone as well as the partial strengthening of the self-form arch ring at the intrados. Major test finding was the use of thicker Keystone, alter the behavior of the self-form arch, considerably increased the load carrying capacity by 79%. Partial strengthening of the intrados with CFRP fabrics of typical arch ring Keystone resulted considerable increased the debonding load of fabrication CFRP sheets by 81%, increase the localized crushing load by 13%, and considerably increase voussoir sliding load by 107%.

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An Introduction to Structural Mechanics for Architects

Cited by 2 publications

References 0 publications

Physics-Based Freely Scalable Continuum Deformation for UAS Traffic Coordination

Physics-Based Freely Scalable Continuum Deformation for UAS Traffic Coordination

Experimental Investigation of the Behaviour of Self-Form Segmental Concrete Masonry Arches

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