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Microscale Discrete Element Model for Simulating Bridging Behavior of Fractured Glass Laminates

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Publication date20/06/2022
Host publicationChallenging Glass Conference Proceedings
EditorsJan Belis, Freek Bos, Christian Louter
Number of pages12
Volume8
<mark>Original language</mark>English
Event8th International Conference on the Architectural and Structural Application of Glass, CGC 2022 - Ghent, Belgium
Duration: 23/06/202224/06/2022

Conference

Conference8th International Conference on the Architectural and Structural Application of Glass, CGC 2022
Country/TerritoryBelgium
CityGhent
Period23/06/2224/06/22

Publication series

NameChallenging Glass Conference Proceedings
PublisherChallenging Glass Conference
Volume8
ISSN (Print)2589-8000
ISSN (electronic)2589-8019

Conference

Conference8th International Conference on the Architectural and Structural Application of Glass, CGC 2022
Country/TerritoryBelgium
CityGhent
Period23/06/2224/06/22

Abstract

The bridging behavior between fragments is one vital factor in the post-fracture stage of glass laminates. A particle-based discrete element model was developed in this work to simulate the bridging behavior of fractured glass laminates. The model was based on the calibration of hyperelastic PVB material properties using soft-bond model and further validated with the experimental data as well as the observations from through-crack-tensile tests. In order to investigate the bridging performance of fractured glass laminates with multiple fragments under uniaxial tension, three factors encompassing the crack aligning, fragment number and adhesion conditions were considered to perform a parametric study. The results give an exploratory application of the developed discrete element models in the estimation of the post-fracture behaviors. It is found that the smaller fragment size can diminish the tension-stiffening effect in the non-aligned case which might generate an enhancing ratio of initial modulus up to nearly 3.6. The non-aligned cracks can also lead to a very high strength if the adhesion ability can be guaranteed. However, the delamination of fragments is expected to control the post-fracture strength of fractured glass laminates with PVB interlayer.

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