Lookup NU author(s): Dr Gunmo Gu,
Dr David Lilley,
Dr Francis Franklin
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This paper discusses the importance of track irregularities in railway bridge design, and presents a new technique for calculating the dynamic impact load induced by such irregularities: the structural articulation method. The properties of the combined bridge-suspension system are coupled through global mass, stiffness, and damping matrices. Under the proposed method, the true suspension system over a particular point on the bridge girder at time t is divided into equivalent suspension systems attributed to adjacent finite-element nodes of the bridge. The time-dependent effects of a moving mass are thereby included in the equation of motion.
Author(s): Gu G, Lilley DM, Franklin FJ
Publication type: Article
Publication status: Published
Journal: Vehicle System Dynamics
Pages: 1-19 iFirst
Print publication date: 13/05/2010
ISSN (print): 0042-3114
ISSN (electronic): 1744-5159
Publisher: Taylor & Francis
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