Mechanical response of laminated glass subjected to low-velocity impact
Referat wygłoszony
| Status: | |
| Autorzy: | Ivanov Ivelin V., Sadowski Tomasz |
| Rok wydania: | 2011 |
| Język: | angielski |
| Źródło: | EURODYN 2011, 8th International Conference on Structural Dynamics, Leuven, Belgium, 4-6 July 2011 |
| Miasto wystąpienia: | Leuven |
| Państwo wystąpienia: | BELGIA |
| Efekt badań statutowych | NIE |
| Abstrakty: | angielski |
| Laminated glass is widely used for aircraft windows, architectural and automotive glazing. The knowledge of its mechanical response to low-velocity impact is very useful to design really safety glazing. The mechanical response is investigated by experiments and finite element simulations for better understanding and insight. Laminated glass is modeled by 3-D hexahedral finite elements in explicit time integration finite element method. The glass layers are modeled by four plies of finite elements with brittle damage. The parameters of the damage model are determined by fracture toughness and ultimate tensile tests. The Poly-Vinyl Butyral (PVB) interlayer is modeled by one ply of finite elements with hyper-elastic material model. The parameters of hyper-elastic material model are determined by shear compressive tests. Low-velocity impact of a spherical rigid body onto a rectangular plate of laminated glass simply supported on a circular edge is simulated and experimentally tested for various impact velocity of the rigid body. The fracture pattern of laminated glass in the simulations is very similar to the experimental ones as well as the velocity history of both corresponds each other. The analysis of the failure mechanism of laminated glass shows that the radial cracks in the glass layers emanate from the non-impacted side of the layers and propagate through the thickness of the layer quickly. They are more pronounced in the non-impacted layer of glass. The circumferential cracks emanate from the impacted side of the layers and they are more pronounced in the impacted layer of glass. The circumferential cracks are more if the velocity of impact is higher. |
