Emerging glass structures, which frequently use laminated glass (LG) as load bearing elements, see a significant rise in recent decade. Existing analytical solutions for LG under impact present limitation when introduced into structural LG products, as structural LG having more glass plies and soft polymeric interlayers requires more accurate nonlinear analytical model. In this study, a nonlinear analytical model was proposed for the simply supported square structural LG subjected to hard body impact. The motion equations were established based on a third order shear deformation theory and von Kármán nonlinear strain–displacement relationship. Based on a two-step perturbation method, the solutions of the motion equations were obtained. The fourth-order Runge–Kutta method was used to capture the impact force variation. Drop weight impact tests with increasing impact velocity, were conducted to record the impact force of LG panels before breakage. Eighteen LG panels with PVB or SG interlayers were tested. Through analysing the fracture initiation from high speed photos as well as the impact force variation in the impact attempt causing fracture, certain feature of the experimental impact force response was determined to be validated with analytical prediction. The validation results show that the proposed model can well reproduce the examined feature and achieve satisfactory impact force response. Case study was then designed to investigate the influence due to the safety windows film on reducing the pre-crack impact response. The effective thickness of LG based on the equivalence of indentation was also proposed for the hard body impact.

经常使用夹层玻璃 (LG) 作为承重元件的新兴玻璃结构在最近十年显着增加。现有的 LG 受冲击分析解决方案在引入结构 LG 产品时存在局限性，因为具有更多玻璃层和软聚合物夹层的结构 LG 需要更准确的非线性分析模型。在这项研究中，提出了一种非线性分析模型，用于承受硬体冲击的简支方形结构LG。基于三阶剪切变形理论和von Kármán非线性应变-位移关系建立了运动方程。基于两步微扰法，得到了运动方程的解。四阶 Runge-Kutta 方法用于捕捉冲击力的变化。进行冲击速度增加的落锤冲击试验，以记录 LG 面板在破损前的冲击力。测试了十八块带有 PVB 或 SG 中间层的 LG 面板。通过分析高速照片中的断裂起始以及导致断裂的冲击尝试中的冲击力变化，确定了实验冲击力响应的某些特征，以通过分析预测进行验证。验证结果表明，所提出的模型可以很好地再现所检查的特征并获得令人满意的冲击力响应。然后设计案例研究来调查由于安全窗膜对减少预裂冲击响应的影响。对于硬体冲击，还提出了基于压痕等效性的 LG 有效厚度。