Abstract
A model for the design of glass plates to failure is presented, which, based on the theory of plates with gross deformations for the calculation of the stress state as well as on the empirical flaws statistical distribution in the glass surface, applies fracture Mechanics criteria to establish a probabilistic prediction of failure. The validity of the model has been experimentally proved for plates with different thicknesses and geometric characteristics.
Highlights
In recent years a noticeable increment in the use of glass plates as façade elements can he reported
- El cálculo basado en tensiones admisibles, presenta una serie de limitaciones, de sobra conocidas, por lo que debe ser sustituido por el método de estados límites, en este caso, de rotura. This could be referred to as an architectonic trend aimed at exploiting the aesthetic, economy and effect of coloured glass which takes on a structural function of envelope or cladding, as an alternative to the traditional glass plates, limited until now to a secondary role as glass plates for windows
The stress state that really exists in a glass plate canot be determined, due to the presence of residual stresses that arise during the manufacturing and cooling processes, that result in the creation of superficial microscopies flaws or microcracks (8)
Summary
A model for the design of glass plates to failure is presented, which, based on the theory of plates with gross deformations for the calculation of the stress state as well as on the empirical flaws statistical distribution in the glass surface, applies fracture Mechanics criteria to establish a probabilistic prediction of failure. The validity of the model has been experimentally proved for plates with different thicknesses and geometric characteristics
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