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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：高炉夹层玻璃的断裂与破碎：实验与数值研究

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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，我们将显式有限元方法与高阶元素和3D节点拆分结合使用，以模拟爆炸加载的夹层玻璃的断裂和破碎。节点拆分是一种建模技术，其中在达到断裂标准时将元素分离而不是腐蚀。因此，所得的有限元模拟能够描述行为，例如在不损失质量或动量的情况下破碎，玻璃板的细裂纹以及玻璃与聚合物中间层之间的分层和分离。将模拟与在冲击管中进行的爆炸实验进行比较。在五个不同的压力水平下，总共测试了15个夹层玻璃样品（由退火浮法玻璃板和PVB组成）。在玻璃板上产生裂缝的时间和位置各不相同，这又导致了在不同压力水平下裂缝后行为的变化。模拟与爆炸测试非常吻合，揭示了所选数值方法的潜力。进行了整体（即非层压）玻璃板的其他模拟，并将其与早期研究中提出的实验进行了比较。同样，这些模拟显示出与实验高度可比的响应，并且能够描述裂纹分支，大玻璃碎片的形成和自由飞行的碎片。

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  • 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：爆破实验夹层玻璃冲击管数值模拟节点分裂;

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