有轨电车复合顶盖用PET泡沫夹层板抗冲击性能分析
廖婷婷王明猛肖守讷阳光武杨冰朱涛
Impact Resistance Analysis of PET Foam Sandwich Panels for Composite Roof of Tram
LIAO TingtingWANG MingmengXIAO ShouneYANG GuangwuYANG BingZHU Tao
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作者信息:西南交通大学牵引动力国家重点实验室， 610031， 成都
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Affiliation:State Key Laboratory of Traction Power, Southwest Jiaotong University, 610031, Chengdu, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2022.08.013
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中图分类号/CLCN:U482.105
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栏目/Col:研究报告
摘要:
对某泡沫夹层板进行落球冲击实体试验，测试了落球冲击对上面板造成的凹坑尺寸；建立有限元模型，从夹层板各部位能量吸收比重、接触力、上面板最大有效应力和变形特征等方面对上面板厚度不同的夹层板抗冲击性能进行分析比较；明确上面板厚度为0.8 mm、下面板厚度为0.6 mm的PET（聚对苯二甲酸乙二醇酯）泡沫夹层板为有轨电车复合顶盖的最优选择。该板兼具较优的抗冲击性能和经济实用性。对某有轨电车复合顶盖进行有限元建模，计算了7个典型冲击工况下复合顶盖的结构强度和变形特征，验证了该泡沫夹层板顶盖结构的可靠性和安全性。
Abstracts:
Ball drop impact performance physical test is carried out on a foam sandwich panel, and the size of the dent on panel made by the ball drop impact is measured. Finite element model is established. The impact resistance of sandwich panels with upper panel of different thickness is comparatively analyzed from the four aspects of the energy absorption ratio of each part of the sandwich panel, the contact force, the upper panel maximum effective stress and the deformation characteristics.It is found that when the upper panel thickness is 0.8 mm, the lower one thickness is 0.6 mm, the PET sandwich panel is the optimal choice for tram composite roof, and possesses both optimized impact resistance and economic feasibility. Finite element model of a tram composite roof is established, and the structural strength and deformation characteristics of the composite roof under 7 typical impact conditions arecalculated, verifying the reliability and safety of PET sandwich panel roof structure.
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