复合材料科学与工程 ›› 2014, Vol. 0 ›› Issue (4): 27-31.

• 基础研究 • 上一篇    下一篇

复合材料厚板结构中起鼓缺陷对抗压性能影响的试验研究

许松健, 孙启力, 汪家继, 冯鹏*   

  1. 清华大学土木工程系,土木工程安全与耐久性教育部重点实验室,北京100084
  • 收稿日期:2013-09-05 发布日期:2021-09-17
  • 通讯作者: 冯鹏(1977-),男,博士,教授,主要从事复合材料结构工程应用的研究,fengpeng@tsinghua.edu.cn。
  • 作者简介:许松健(1992-),男,本科生,主要从事结构工程方面的研究。

EXPERIMENTAL STUDY ON BULKING DEFECTS EFFECTING ON COMPRESSION BEHAVIOR OF THICK FRP LAMINATES

XU Song-jian, SUN Qi-li, WANG Jia-ji, FENG Peng*   

  1. The key Laboratory of Civil Engineering Safety and Durability of the Ministry of Education, Tsinghua University, Beijing 100084, China
  • Received:2013-09-05 Published:2021-09-17

摘要: 利用真空导入工艺生产的纤维增强复合材料往往存在诸多起鼓现象。本文利用精密加工的钢材模具生产的构件进行轴压试验,得到正常构件与起鼓构件的荷载-位移曲线和破坏模式。试验显示起鼓构件的承载力为正常构件的66.4%,且起鼓构件均在外层树脂出现贯通竖向裂缝。结合有限元建模的手段,得出了基于树脂部分Mises应力的强度校核准则。

关键词: 真空导入, 复合材料, 起鼓, 抗压, 破坏模式, 极限承载力

Abstract: FRP(fiber reinforced polymer) materials made from VARTM (Vacuum-Assisted Resin Transfer Molding) could be manufactured with various bulking defects. This article employs thick-slab FRP members which was manufactured by steel molds of high precision to derive the load-displacement curve of normal specimen and bulking specimen under compression. The experiment shows that the compression capacity of bulking members is merely 66.4% of the normal specimen, with the axial cracks occurring near the outward resin part. With FEM methods, a strength criterion of Mises stress of resin is derived and testified.

Key words: VARTM, composite materials, bulking, compression strength, damage mode, ultimate bearing capacity

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