Numerical Modeling of a Reinforced Concrete Beam’s Vibration / Modelagem Numérica da Vibração de uma Viga de Concreto Armado
Structural Health Monitoring (SHM) can be vastly used to verify the state of a structure, avoiding the need of destructive tests to do so. One of the many ways to perform SHM is by obtaining and evaluating modal parameters (natural frequencies and mode shapes) of a certain structure, collected by dy...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2021 |
| País: | Brasil |
| Institución: | Instituto Superior de Educação Vera Cruz (VeraCruz) |
| Repositorio: | Revista Veras |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs2.ojs.brazilianjournals.com.br:article/26374 |
| Acceso en línea: | https://ojs.brazilianjournals.com.br/ojs/index.php/BRJD/article/view/26374 |
| Access Level: | acceso abierto |
| Palabra clave: | Structural Health Monitoring Finite Element Reinforced Concrete Modal Analysis Vibration. |
| Sumario: | Structural Health Monitoring (SHM) can be vastly used to verify the state of a structure, avoiding the need of destructive tests to do so. One of the many ways to perform SHM is by obtaining and evaluating modal parameters (natural frequencies and mode shapes) of a certain structure, collected by dynamic tests, and compare them to pre-estabilished values for non-damaged structures. Such monitoring can be performed with a reduced maintenance cost in the electricity distribution network, which presents a high number of reinforced concrete (RC) light poles. This paper is part of a program that seeks to develop a methodology of structural health monitoring of reinforced concrete light poles using experimental modal analysis (EMA), and since one of the first steps for this is the validation of the structural model, it intends to design a numerical model in a Finite Element (FE) software (ANSYS) of a laboratory tested reinforced concrete beam, and compare the modal parameters numerically, experimentally and analitically obtained. The model considers the behaviour of reinfored concrete, a composite material, and the free-free boundary conditions identical to the ones used in the laboratory tests. The comparative results between the numerical models and experimental tests are satisfatory in such way that they validate the model as proper in the attainment of reinforced concrete light poles’s modal parameters. |
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