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- Title
VARIATION OF THE DEGREE OF NONLINEARITY OF CABLE STRUCTURES IN TIME, UNDER DYNAMIC LOADING.
- Authors
PINTEA, ADRIAN
- Abstract
The nonlinear response of prestressed cable structures is extensively covered in literature but no explicit reference is made to the magnitude of the nonlinear response. The degree of nonlinearity is a measure of nonlinearity for cable structures. This paper investigates the variation of the degree of (geometrical) nonlinearity in time. The dynamic linear and nonlinear responses of several cable suspended structures (such as cable trusses and hyperbolic paraboloids) are analysed taking into account different levels of pretension. Two types of dynamic loads are considered. The degree of nonlinearity is calculated from the linear and nonlinear responses. Results are compared and values of the degree of nonlinearity that are obtained are being presented and discussed. The study can be helpful in identifying the type of analysis needed for a certain structure (linear/nonlinear) and showing the differences between the linear response and the real (nonlinear) response of cable suspended structures.
- Subjects
NONLINEAR theories; CABLE structures; HYPERBOLIC paraboloid structures; DYNAMIC loads; LINEAR statistical models; FINITE element method; MATHEMATICAL models
- Publication
Mathematical Modeling in Civil Engineering, 2012, Issue 4, p201
- ISSN
2066-6926
- Publication type
Article