ECCOMAS 2024

Qualitative Description of Fracture in Laminated Glass Using Phase-field

  • Schmidt, Jaroslav (Czech Technical University in Prague)
  • Šejnoha, Michal (Czech Technical University in Prague)

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Laminated glass is a commonly used material today, but it is still not satisfactorily described by numerical methods. It is a composite material consisting of interlayers and float glass layers. A proper description requires taking into account a number of phenomena - initiation and development of cracks, viscoelastic response of the interlayer, delamination and others. This contribution addresses, in particular, blast loading of laminated glass plates. This introduces a series of challenging tasks both in terms of theoretical formulation and subsequent numerical analysis of crack formation. However, recently emerging phase-field models show a certain ability to predict such a system. The glass after breakage fragments into a large number of pieces. This phenomena still cannot be predicted qualitatively by nowadays solvers, but a quantitative analysis is usually sufficient for engineering design or often gives at least an idea of the mode of failure or the mechanics of crack formation. Thus, such a qualitative analysis will be presented.