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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 102
PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING
Edited by:
Paper 145

Analysis of Cable Structures using the Dynamic Relaxation Method

M. Hüttner, J. Máca and P. Fajman

Department of Mechanics, Faculty of Civil Engineering
Czech Technical University in Prague, Czech Republic

Full Bibliographic Reference for this paper
, "Analysis of Cable Structures using the Dynamic Relaxation Method", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 145, 2013. doi:10.4203/ccp.102.145
Keywords: cable structures, nonlinear analysis, dynamic relaxation, kinetic damping.

Summary
Several different schemes of the dynamic relaxation method are compared in this paper. Methods with viscous damping and methods with kinetic damping are used. Kinetic damping with a peak in the middle of the time step and the kinetic damping with the parabolic approximation of the peak is used. Three-dimensional examples of cable structures are solved and the efficiency and stability of each method is compared. Three different ways of cable approximation are used. The cable is approximated as a tension bar, a catenary or a parabolic cable element. The effect of mass distribution throughout the structure is also studied.

Nine different schemes of the dynamic relaxation method are used in this paper. It is shown that it is very effective to use the kinetic damping with a peak in the middle of the time step and the uniform mass discretization for the whole structure.

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