玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (1): 5-10.

• 基础研究 •    下一篇

格构腹板增强泡沫夹芯复合材料准静态压缩吸能试验

樊子砚1, 方海1*, 庄勇2, 刘伟庆1   

  1. 1.南京工业大学土木工程学院,南京211816;
    2.中铁大桥勘测设计院集团有限公司,武汉430034
  • 收稿日期:2016-07-11 出版日期:2017-01-28 发布日期:2017-01-28
  • 通讯作者: 方海(1981-),男,博士,副教授,主要从事复合材料结构研究,fanghainjut@163.com。
  • 作者简介:樊子砚(1992-),男,硕士生,主要从事复合材料结构研究。

EXPERIMENTAL STUDY ON ENERGY ABSORPTION OF THE FOAM SANDWICH COMPOSITE ENHANCED LATTICE WEB UNDER QUASI-STATIC COMPRESSION

FAN Zi-yan1, FANG Hai1*, ZHUANG Yong2, LIU Wei-qing1   

  1. 1.College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China;
    2.China Railway Major Bridge Reconnaissance & Design Institute Co., Ltd., Wuhan 430034, China
  • Received:2016-07-11 Online:2017-01-28 Published:2017-01-28

摘要: 复合材料夹层结构具有轻质高强、弯曲刚度大、耐腐蚀、可设计性强、抗冲击、吸能效果好等特点,用玻璃纤维增强复合材料制作面板和格构腹板,以聚氨酯泡沫作为芯材,采用真空导入成型工艺,制备格构腹板增强泡沫夹芯复合材料试件。保持试件的平面尺寸不变,改变腹板间距、腹板高度、腹板铺层数和泡沫密度等参数,对试件进行准静态轴向压缩试验,对比研究其吸能性能。得到以下结论:格构腹板间距和厚度对抗压承载力和吸能性能影响较大,而泡沫芯材的密度影响较小;该新型复合材料的抗压承载力以及吸能性能随着腹板所占的体积比增大而增大,格构腹板对芯材的承载及吸能增强效果显著。

关键词: 复合材料, 格构腹板, 准静态压缩, 吸能

Abstract: Composite sandwich structure has the characteristics of light weight, high strength, bending stiffness, corrosion resistance, good designability, impact resistance, energy absorbing, etc. Lattice web reinforced foam sandwich composite specimens are produced by vacuum infusion, with glass fiber reinforced polymer (GFRP) for the panels and lattice webs, polyurethane foam for core. Holding the specimen plane size constant and changing the distance, height and thickness of the webs and the density of foam, specimens are tested under quasi-static axial compression to study their performance of energy absorption. It is shown that with the increase of the volume ratio of web, the yield bearing capacity and energy absorption performance of the composite sandwich structure increase. In addition, the lattice web plays a role in strengthening the core and absorbing energy.

Key words: composites, lattice webs, quasi-static compression, energy absorption

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