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首页> 外文期刊>International journal of impact engineering >Fracture and fragmentation of blast-loaded laminated glass: An experimental and numerical study
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Fracture and fragmentation of blast-loaded laminated glass: An experimental and numerical study

机译：膨胀型层压玻璃的骨折和碎片：实验性和数值研究

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摘要

In this study, we use the explicit finite element method in combination with higher order elements and 3D node splitting to simulate fracture and fragmentation of blast-loaded laminated glass. Node splitting is a modelling technique where elements are separated instead of being eroded when a fracture criterion is reached. The resulting FE simulations are thus capable of describing behaviours such as fragmentation without loss of mass or momentum, fine cracking of the glass plates, and delamination and separation between the glass and the polymer interlayer. The simulations are compared to blast experiments conducted in a shock tube. In total, 15 laminated glass specimens (consisting of annealed float glass plates and PVB) were tested at five different pressure levels. The time and position of fracture initiation in the glass plates varied, which in turn resulted in varying post-fracture behaviour within the different pressure levels. The simulations were in good agreement with the blast tests, revealing the potential of the selected numerical method. Additional simulations of monolithic (i.e., non-laminated) glass plates were conducted and compared to experiments that were presented in an earlier study. Again, these simulations displayed a highly comparable response to the experiments, and were able to describe crack branching, formation of large glass splinters and free-flying fragments.
机译：在这项研究中，我们使用明确的有限元方法与高阶元素和3D节点分裂组合以模拟爆破叠层玻璃的裂缝和碎片。节点分离是一种建模技术，其中分离元素而不是在达到裂缝标准时被侵蚀。因此，所得到的Fe模拟能够描述诸如碎片的行为，而不会损失质量或动量，玻璃板的细裂化，以及玻璃和聚合物中间层之间的分层和分离。将模拟与冲击管中进行的喷砂实验进行比较。总共有15个夹层玻璃样品（由退火浮法玻璃板和PVB组成）在五种不同的压力水平下进行测试。骨折在玻璃板中的裂缝开始的时间和位置变化，这反过来导致不同压力水平内的裂缝后行为不同。仿真与爆破试验很好，揭示了所选数值方法的潜力。对整体（即非层压的）玻璃板进行另外的模拟，并与先前研究中提出的实验进行比较。同样，这些模拟对实验表现出高度相当的响应，并且能够描述大玻璃碎片和自由碎片的裂缝分支，形成。

著录项

  • 来源
    《International journal of impact engineering》 |2019年第10期|103334.1-103334.17|共17页
  • 作者

    Osnes Karoline; Holmen Jens Kristian; Hopperstad Odd Sture; Borvik Tore;

  • 作者单位

    Norwegian Univ Sci & Technol NTNU Dept Struct Engn Struct Impact Lab SIMLab NO-7491 Trondheim Norway|NTNU CASA NO-7491 Trondheim Norway;

    Norwegian Univ Sci & Technol NTNU Dept Struct Engn Struct Impact Lab SIMLab NO-7491 Trondheim Norway;

    Norwegian Univ Sci & Technol NTNU Dept Struct Engn Struct Impact Lab SIMLab NO-7491 Trondheim Norway|NTNU CASA NO-7491 Trondheim Norway;

    Norwegian Univ Sci & Technol NTNU Dept Struct Engn Struct Impact Lab SIMLab NO-7491 Trondheim Norway|NTNU CASA NO-7491 Trondheim Norway;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Blast experiments; Laminated glass; Shock tube; Numerical simulations; Node splitting;

    机译：BLAST实验;夹层玻璃;冲击管;数值模拟;节点分裂;

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