Abstract In recent years, the cohesive zone model (CZM) coupled with linear solid elements has become increasingly popular for the impact fracture analysis of laminated glass. Meanwhile, the computational inefficiency problem accompanied by the method has also been highlighted, where the internal force calculation requires high computational cost. In view of this, this work presents a fracture model combining efficient solid-shell elements with an extrinsic CZM to improve computational efficiency. Instead of using solid elements, it is preferable to use solid-shell elements to discretize the thin-walled glass layers. Moreover, the employed pentahedron solid-shell element is more computationally efficient than linear solid elements. The extrinsic CZM, where the cohesive elements are adaptively inserted into the shared surfaces between the finite elements, is employed to represent the onset and growth of glass cracks. Numerical examples, including an out-plane bending test, an in-plane bending test, and a laminated glass plate drop-weight test are carried out in order to validate the effectiveness of the proposed method. Finally, the computational efficiency of the proposed method in the laminated glass fracture analysis is investigated by comparison with the solid element based extrinsic CZM.

中文翻译：

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一种用于夹层玻璃冲击断裂分析的高效实壳内聚区模型

摘要 近年来，结合线性实体单元的内聚区模型（CZM）在夹层玻璃的冲击断裂分析中越来越流行。同时，该方法伴随的计算效率低下问题也凸显出来，内力计算需要高计算成本。有鉴于此，本工作提出了一种将有效的实体壳单元与外在 CZM 相结合的断裂模型，以提高计算效率。不使用实体单元，最好使用实体壳单元来离散化薄壁玻璃层。此外，采用的五面体实体壳单元比线性实体单元在计算上更有效率。外在 CZM，其中粘性元素自适应地插入到有限元素之间的共享表面中，用于表示玻璃裂纹的发生和增长。为了验证所提出方法的有效性，进行了包括平面外弯曲试验、平面内弯曲试验和夹层玻璃板落锤试验在内的数值例子。最后，通过与基于实体单元的外在 CZM 进行比较，研究了该方法在夹层玻璃断裂分析中的计算效率。