Contraste experimental de un modelo probalístico para el dimensionamiento de elementos de vidrio plano con consideraciones de modo mixto de carga
- Mª. García Prieto
- A. Miranda Prieto
- A. Bernardo Sánchez
- Mª. J. Lamela Rey
- A. Fernández Canteli
ISSN: 0366-3175
Year of publication: 1999
Volume: 38
Issue: 2
Pages: 121-126
Type: Article
More publications in: Boletín de la Sociedad Española de Cerámica y Vidrio
Abstract
A characteristic of the glass is its fragility and the scatter of the experimental mechanical strength due to the presence of defects that appear in the process of manufacturing or handling. Accordingly, investigations on this material were priorly conducted to improve the processes of manufacturing and to establish design methodologies based on probabilistic approa¬ches. The influence of mode II of loading was traditionally ignored or considered as ratio of mode II. Recent studies have shown that when a shear-loaded crack becomes unstable a new compressive stress concentration field builds up in the notch formed between the original crack and the branch crack. This stress field affects the energy balance and also the beginning of crack extension. A procedure to design glass elements was developed jointly with CIDA of Cristalería Española,S.A. The aim of this work is to improve the model by the consideration of a mixed mode loading and its experimental contrast.