Numerical Modeling of Post-Fracture Behaviour in Laminated Safety Glass: Method Development
|
Project name
|
Numerical Modeling of Post-Fracture Behaviour in Laminated Safety Glass: Method Development
|
|
Acronym
|
NachbruchVSG
|
|
Project partner
|
- TU Darmstadt, Institut für Statik und Konstruktion
- TU Darmstadt, Glass Competence Center (GCC)
- Technische Hochschule Mittelhessen (THM)
- Institut der Hüttentechnischen Vereinigung der Deutschen Glasindustrie e.V.
|
|
Grantor
|
Industrielle Gemeinschaftsforschung IGF, Projektträger DLR, im Auftrag des Bundesministeriums für Wirtschaft und Klimaschutz BMWK
|
|
Duration
|
01.08.2024 – 31.01.2027
|
|
Project content
|
From 2024 onwards, head impact on the windshield will become a regulatory load case in the automotive sector and is gaining increasing importance as part of passive safety. The Head Injury Criterion (HIC) is used to assess the severity of potential injuries, and its thresholds must already be considered during vehicle development. Since no components are available for evaluation in the early stages of development, the prediction of head injury risk relies on numerical methods. While the fracture process and behaviour of laminated safety glass (LSG, consisting of glass and interlayer film) are well-described by previous research, a method to quantitatively capture the post-fracture behaviour of fully broken LSG is not yet available. The project aims to develop a validated computational methodology for simulations to incorporate the post-fracture behaviour of LSG into the automotive sector, enabling realistic HIC predictions. For this purpose, the mechanical properties of fractured LSG will be determined from small samples under varying strain rates and fragmentation levels. Additionally, a methodology to predict the fragmentation degree under impact loads will be developed. The findings will be transferred into numerical models, and the simulation results will be validated through experiments on windshields.
|
|
|
