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An ordinary state-based peridynamic modeling for dynamic fracture of laminated glass under low-velocity impact

机译：基于普通状态的低速冲击下夹层玻璃动态断裂的动力学模型

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摘要

Laminated glass, as a typical kind of sandwich-structure composite, is widely used in various fields such as safety, vehicle and transportation engineering. Laminated glass mainly suffers from dynamic/impact loadings, and glass-ply cracking is the main failure pattern of laminated glass. This paper presents a non-local ordinary state-based peridynamic modeling and numerical approach for simulating the dynamic failure process of sandwiched laminated glass under low-velocity impact loading. The mechanical behavior of the PVB layer is simulated by reformulating classical visco-elastic model under the framework of ordinary state-based peridynamic theory, and the adhesion between the glass and PVB interlayer is described by using a penalty-based method. Fracture patterns of a laminated glass plate under drop-weight loading were investigated, and the numerical results compared well with experimental observations. Furthermore, a series of numerical simulations were conducted to in-depth analyze the effect of the thickness of the PVB interlayer and the glass layers on the fracture mode, initial locations and crack propagation speed of the laminated glass when subjected to impact.
机译：夹层玻璃作为一种典型的夹心结构复合材料，被广泛用于安全，车辆和运输工程等各个领域。夹层玻璃主要承受动态/冲击载荷，玻璃层破裂是夹层玻璃的主要破坏方式。本文提出了一种基于非局部常态的周向动力学模型和数值方法，用于模拟夹层夹层玻璃在低速冲击载荷下的动态破坏过程。在普通的基于状态的周边动力学理论的框架下，通过重新构造经典的粘弹性模型来模拟PVB层的力学行为，并使用基于罚分的方法来描述玻璃与PVB中间层之间的附着力。研究了在负重载荷作用下夹层玻璃板的断裂模式，并将数值结果与实验结果进行了比较。此外，进行了一系列数值模拟，以深入分析PVB中间层和玻璃层的厚度对夹层玻璃在受到冲击时的断裂模式，初始位置和裂纹扩展速度的影响。

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