Freddi Francesco, Mingazzi Lorenzo
Department of Engineering and Architecture, Università di Parma, Parco Area delle Scienze 181/A, I 43124 Parma, Italy.
Materials (Basel). 2020 Jul 20;13(14):3218. doi: 10.3390/ma13143218.
The complex failure mechanisms of glass laminates under in-plane loading conditions is modelled within the framework of phase-field strategy. Laminated glass is widely used for structural purposes due to its safe post-glass-breakage response. In fact, the combination of several glass plies bonded together with polymeric interlayers allows overcoming the brittleness of the glass and to reach a pseudo-ductile response. Moreover, the post-breakage behaviour of the laminate is strictly correlated by the mechanical properties of the constituents. Ruptures may appear as cracks within the layers or delamination of the bonding interface. The global response of a glass laminate, validated against experimental results taken from the literature, is carried out by investigating a simplified layup of two glass plies connected by cohesive interfaces through an interlayer. Delamination of the adhesive interface is described, and crack patterns within the materials are fully described. Finally, the proposed approach put the basis for future comparisons with results of experimental campaign and real-life applications.
在相场策略框架内对玻璃层压板在面内加载条件下的复杂失效机制进行了建模。层压玻璃因其在玻璃破碎后的安全响应而被广泛用于结构用途。事实上，将多个玻璃层与聚合物中间层粘结在一起的组合能够克服玻璃的脆性并实现准延性响应。此外，层压板的破碎后行为与各组成部分的力学性能密切相关。破裂可能表现为层内的裂纹或粘结界面的分层。通过研究由粘结界面通过中间层连接的两个玻璃层的简化铺层，对玻璃层压板的整体响应进行了研究，并与文献中的实验结果进行了验证。描述了粘结界面的分层情况，并全面描述了材料内部的裂纹模式。最后，所提出的方法为未来与实验活动结果和实际应用结果的比较奠定了基础。
