Three-dimensional modelling on the impact fracture of glass using a GPGPU-parallelised FDEM
Chen, X and Ou, W and Fukuda, D and Chan, A and Liu, H, Three-dimensional modelling on the impact fracture of glass using a GPGPU-parallelised FDEM, Engineering Fracture Mechanics, 277 Article 108929. ISSN 0013-7944 (2023) [Refereed Article]
Due to the brittleness and the wide use of glass in modern engineering applications, its vulnerability
to impact actions and the corresponding fracture behaviour attracted growing attentions
from academics and engineers. In this study, impact fracture responses of glass have been
modelled and simulated using a 3D GPGPU-parallelised hybrid finite-discrete element method, i.
e., the FDEM. Glass is discretised into discrete elements where finite element formulation is
incorporated, enabling accurate predictions on contact forces and structural deformation. A
cohesive fracture model accounting for the rupture of glass is implemented, and numerical examples
are presented and validated with results from literatures. The influence of impact velocity,
boundary condition and projectile nose shape on the fracture of glass has been investigated. It is
found that: (i) fracture pattern changes with the change of velocity; (ii) a rigid boundary support
can be used should no damage occur in the edge of glass; (iii) under the same circumstance, a
larger contact surface results in more severe damage. The GPGPU-parallelised FDEM provides a
practical, efficient and robust computational approach in analysing the impact transient dynamic
behaviour of glass in 3D.