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Simultaneous displacement and internal force prescription in shape control of pin-jointed assemblies

Saeed, Najmadeen M. and Kwan, Alan Shu Khen 2016. Simultaneous displacement and internal force prescription in shape control of pin-jointed assemblies. AIAA Journal 54 (8) , pp. 2499-2506. 10.2514/1.J054811

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Abstract

This paper presents a direct method for controlling nodal displacements, internal bar forces, and simultaneously both nodal displacements and internal bar forces, of a prestressable pin-jointed assembly under load. The method is aimed at static shape control of geometrically sensitive structures through length actuations in selected bars. The paper discusses identification of the most effective bars for actuation so that the desired shape can be obtained, without incurring violation in bar forces, through both a minimal number of actuators and minimum actuation in those actuators. The method can also be used for adjustment of bar forces to either reduce instances of high forces or increase low forces (e.g., in a cable nearing slack). Read More: http://arc.aiaa.org/doi/10.2514/1.J054811

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Publisher: American Institute of Aeronautics and Astronautics
ISSN: 0001-1452
Last Modified: 18 Aug 2016 08:07
URI: http://orca.cf.ac.uk/id/eprint/93881

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