Abstract The purpose of this work is to propose a computational framework for impact fracture of laminated glass. The novel computational framework is based on a newly proposed extrinsic cohesive shell model that is theoretically more accurate than the element deletion method and the intrinsic cohesive model to describe fracture in thin-shell glass layers. A laminated glass model is established, where the glass is discretized into shell elements and the PVB film is modelled by solid elements. The bonding between glass and PVB is described via a developed tied contact method. A single surface contact algorithm is developed for the interaction between impactor and glass. Cohesive shell elements are adaptively inserted into the common boundaries between shell elements along with the growth of glass cracks. An edge-edge contact approach is developed to properly describe the interaction between glass cracks. Several simple examples are performed to validate the effectiveness of the proposed contact algorithms. Finally, the developed numerical framework is applied to the impact fracture simulation of a laminated glass plate. The simulation results are found to be in good agreement with the experimental ones, which validates the capacity of the computational framework in impact fracture analysis of laminated glass.

中文翻译：

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夹层玻璃冲击断裂分析的计算框架：一种外在粘性壳方法

摘要 这项工作的目的是提出一种夹层玻璃冲击断裂的计算框架。新的计算框架基于新提出的外粘性壳模型，该模型在理论上比元素删除方法和内粘性模型更准确，用于描述薄壳玻璃层中的断裂。建立夹层玻璃模型，其中玻璃离散为壳单元，PVB 膜由实体单元建模。玻璃和 PVB 之间的粘合是通过开发的绑定接触方法来描述的。为撞击器和玻璃之间的相互作用开发了一种单面接触算法。随着玻璃裂缝的增长，粘性壳单元被自适应地插入到壳单元之间的公共边界中。开发了一种边缘-边缘接触方法来正确描述玻璃裂纹之间的相互作用。执行几个简单的例子来验证所提出的接触算法的有效性。最后，将开发的数值框架应用于夹层玻璃板的冲击断裂模拟。模拟结果与实验结果吻合良好，验证了计算框架在夹层玻璃冲击断裂分析中的能力。