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An experimental investigation into localised low-velocity impact loading on glass fibre-reinforced polyamide automotive product

机译：玻璃纤维增​​强聚酰胺汽车产品局部低速冲击载荷的实验研究

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摘要

In the automotive industry, more and more engineered parts are shifting from metals to engineering plastics. However localised impact loading and long term ageing effects of under-the-hood plastic components is not well understood. In this paper, localised low velocity impact experiments and simulations were conducted on glass fibre-reinforced polyamide sump to investigate typical flying stones impact scenarios. Complete components were manufactured by injection moulding techniques for the experimental samples. The samples were then subjected to a range of low velocity impact using drop weight tower and flying projectiles from an air gun. Damage assessments were then performed following the experiments. In parallel, finite element analysis using LS DYNA was carried out to virtually benchmark and to predict the strength and fracture behaviour of stressed plastic parts. This has permitted to perform numerous impact tests in different situations with varying parameters. The study results show the significant contribution of the design in terms of shock absorption. The specific sump design with a protective ribbing combined with a superior material increases considerably the impact resistance. The paper will provided detailed discussions and results from both the experiments and finite element analysis investigations.
机译：在汽车工业中，越来越多的工程零件正在从金属转向工程塑料。但是，人们对引擎盖下塑料部件的局部冲击载荷和长期老化效果尚不十分了解。在本文中，对玻璃纤维增​​强的聚酰胺贮槽进行了局部低速冲击试验和模拟，以研究典型的飞石冲击情况。通过注射成型技术为实验样品制造完整的组件。然后使用落锤式塔架和气枪飞行的弹丸对样品进行一定范围的低速冲击。然后在实验之后进行损伤评估。同时，使用LS DYNA进行了有限元分析，以虚拟地进行基准测试并预测受应力塑料零件的强度和断裂行为。这样就可以在不同情况下使用不同的参数执行大量的冲击测试。研究结果表明，该设计在减震方面具有重要作用。特殊的油底壳设计，带有保护性肋条和优质材料，大大提高了耐冲击性。本文将提供实验和有限元分析研究的详细讨论和结果。

著录项

  • 来源
    《Composite Structures》 |2013年第10期|43-53|共11页
  • 作者

    Zakaria Mouti; Keith Westwood; Darren Long; James Njuguna;

  • 作者单位

    Centre for Automotive Technology, Department of Sustainable Systems, Cranfield University, Bedfordshire MK43 OAL, UK;

    Eaton, Automotive Group, West Midlands DY5 2LB, UK;

    Eaton, Automotive Group, West Midlands DY5 2LB, UK;

    Centre for Automotive Technology, Department of Sustainable Systems, Cranfield University, Bedfordshire MK43 OAL, UK;

  • 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

    Low-velocity impact; Polyamide; Automotive part; Damage assessment;

    机译：低速冲击;聚酰胺;汽车零件;损害评估;

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