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Towards improved models for predicting residual stress in glass

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Numerical methods such as finite elements allow us to analyse glass structural elements with considerable precision. The effect of inherent residual stress presents in glass can exhibit behaviour which is not well modelled by conventional finite element models or allowable stress based rules of thumb. Our present state of understanding means that it is not generally possible to predict stress concentration generated within geometric features or long-term material behaviour of glass under sustained loads. The seminar will present some examples of hybrid finite element /contour method for predicting the residual stress present in commercially available glass. Experimental measurements obtained by curvature measurement of glass beams will be presented and compared. A few practical applications of the new model will also be discussed.

This talk is part of the Engineering Department Structures Research Seminars series.

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