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The dynamic analysis of a suspended cable due to a moving load

โœ Scribed by Jong-Shyong Wu; Chi-Ching Chen

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
931 KB
Volume
28
Category
Article
ISSN
0029-5981

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โœฆ Synopsis

The dynamic behaviour of a saggy suspension cable under a moving load was investigated. First of all, the updated Lagrangian formulation and the finite element method were used to derive the property matrices of a saggy suspension cable in order to define the discretized equations of motion. Then, the Jacobi method was applied to the determination of the natural frequencies and the mode shapes of the suspended cable. The moving-load-induced dynamic responses of the saggy suspended cable were obtained by using the Newmark direct integration method incorporated with the Newton -Raphson iteration technique. The influence of some pertinent factors, such as speed of moving load, ratio of axial rigidity to total cable weight (AE/OrityoL) and ratio of moving load mass to total cable mass, is the key point of the dynamic analysis.

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