Limit Analysis of a historical iron arch bridge. Formulation and computational implementation
| Autor: | Rosalba Ferrari, Egidio Rizzi, Giuseppe Cocchetti |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Gaussian Evolutive perfectly-plastic structural analysis Materials Science 020101 civil engineering 3D truss-frame structures Historical iron arch bridge Limit Analysis Non-linear elastoplastic FEM model “Exact” collapse Civil and Structural Engineering Modeling and Simulation Materials Science (all) Mechanical Engineering Computer Science Applications1707 Computer Vision and Pattern Recognition 02 engineering and technology 0201 civil engineering Matrix (mathematics) symbols.namesake 0203 mechanical engineering Convergence (routing) Settore ICAR/08 - Scienza delle Costruzioni General Materials Science Limit (mathematics) Arch business.industry Computer Science Applications Computer Vision and Pattern Recognition Structural engineering Finite element method 020303 mechanical engineering & transports Limit analysis symbols Limit load business |
| Popis: | Modeling of the global elastoplastic behavior of a historical iron arch bridge.New approach for non-linear elastoplastic analysis of 3D truss-frame structures.Determination of "exact" collapse by evolutive Limit Analysis.Treatment of mutual connections by static condensation and Gaussian elimination.Iterative updating procedure to compute the global elastoplastic matrix. In the paper an innovative formulation of a FEM computational model for the analysis of elastoplastic 3D truss-frame structures is developed within the framework of the Theory of Plasticity and Limit Analysis. Reference application is made to a historical iron arch bridge. Original computational features implemented in the solving algorithm allow for tracking the limit structural behavior of the bridge, by reaching convergence with smooth runs up to the true limit load and by tracing the corresponding collapse displacements. This is achieved disregarding for the considerable number of dofs of the whole structural model, ranging in the order of thirteen thousands. |
| Databáze: | OpenAIRE |
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