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Impact Fracture Simulation of Laminated Glass Based on Thick Shell Elements and a Cohesive Zone Model
被引:1
作者:
Xia, Wei
[1
]
Yue, Zhen
[2
]
Zang, Mengyan
[1
]
机构:
[1] South China Univ Technol, Sch Mech & Automot Engn, Guangzhou 510000, Peoples R China
[2] Sun Yat sen Univ, Sch Ocean Engn & Technol, Zhuhai 519000, Peoples R China
来源:
基金:
国家重点研发计划;
关键词:
thick shell element;
cohesive zone model;
laminated glass;
impact fracture;
BRITTLE-FRACTURE;
WINDSHIELD;
DELAMINATION;
BEHAVIOR;
D O I:
10.3390/ma16216966
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Laminated glass is extensively used in automotive windshields, making it crucial to have a comprehensive understanding of its fracture mechanism to ensure driver and pedestrian safety in various windshield impact scenarios. Current research on the cohesive zone model of glass impact failure has encountered challenges related to accuracy and computational efficiency. This paper addresses these issues by utilizing the finite element software LS-DYNA, which integrates a cohesive zone model and thick shell (Tshell) elements to simulate and analyze the impact failure process of laminated glass. The combination of Tshell and cohesive elements was validated using a DCB example. Subsequently, the proposed method was applied to simulate the impact damage on an automobile's front windshield, providing valuable insights from the obtained results. Finally, the influence of curvature, the number of layers, and the thickness ratio of each layer were investigated, leading to some valuable conclusions. Firstly, an increase in the thickness of the upper glass layer correlates with a decrease in the peak acceleration of the dummy-head model due to the ductility of PVB material. Secondly, when a curvature exists, the arched configuration of the windshield promotes higher resistance against impact, consequently leading to increased peak acceleration.
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页数:27
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