Estudo teórico-experimental do comportamentodinâmico de telhas de aço trapezoidais formadas a frio
| Autor: | Mezzomo, G. P., Grigolett, G., Iturrioz, I., Gomes, H. M. |
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| Jazyk: | portugalština |
| Rok vydání: | 2009 |
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| DOI: | 10.5281/zenodo.7052098 |
| Popis: | Cold-formed steel roofing sheets are applied over closings and coverings with several types of engineering structures. The connection between the structure and the sheets are often carried out through fixing purlins. The fixation between the sheets is normally done by using simple overlapping of the adjacent longitudinal edges, but it can also be done by means of rivets. Several times, it becomes difficult to evaluate the influence of the boundary conditions on the stiffness of these system types. For this reason, in the present work, the assessment of the structural performance of trapezoidal steel roofing sheets regarding different boundary conditions has been carried out. In order to reach this aim, the natural frequencies and associated vibration modes for each studied case have been evaluated. A theoretical and experimental study has been developed to prove that the dynamic properties of the sheets can allow us to describe their structural behavior. The theoretical model has been carried out by using the Finite Element Method. The comparison between theoretical and experimental results in terms of natural frequencies and eigenmodes associated with them has made it possible to calibrate the finite element models. A detailed analysis of different boundary conditions cases has permitted to arrive at some conclusions about the characteristics of the sheet, for example, the fixing of the sheet's longitudinal edges does not affect its global stiffness, and the restriction level of the edges of the sheet directly determines the stiffness in some specific regions of the sheets. Discussion on the obtained results and conclusions are then presented. MEZZOMO, G. P. ; ITURRIOZ, I. ; GRIGOLETTI, G. ; GOMES, H. M. . Estudo teórico-experimental do comportamento dinâmico de telhas de aço trapezoidais formadas a frio. Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, v. 25, p. 43-60, 2009.DOI:https://www.doi.org/10.5281/zenodo.7052098 |
| Databáze: | OpenAIRE |
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