纤维波纹对复合材料层合板刚度影响研究

复合材料科学与工程 ›› 2015, Vol. 0 ›› Issue (12): 41-47.

纤维波纹对复合材料层合板刚度影响研究

吴维清¹, 朱俊², 王继辉^1*, 舒明杰¹

1.材料复合新技术国家重点实验室,武汉 430070;
2.武汉理工大学工程结构与力学系,武汉 430070

收稿日期:2015-06-10 出版日期:2015-12-28 发布日期:2021-09-14
通讯作者: 王继辉(1962-),男,博士,教授,主要从事聚合物基复合材料力学研究,jhwang@whut.edu.cn。
作者简介:吴维清(1991-),男,硕士,主要从事聚合物基复合材料研究。

EFFECTS OF FIBER WAVINESS ON THE STIFFNESS OF COMPOSITE LAMINATES

WU Wei-qing¹, ZHU Jun², WANG Ji-hui^1*, SHU Ming-jie¹

1. State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;
2. Department of Engineering Structure and Mechanics, Wuhan University of Technology, Wuhan 430070, China

Received:2015-06-10 Online:2015-12-28 Published:2021-09-14

摘要/Abstract

摘要： 从实验及数值模拟两个方面研究均一波纹缺陷对复合材料层合板刚度影响。采用VARI成型工艺制作复合材料波纹板试样,通过压缩测试测得其主杨氏模量和泊松比。利用有限元分析软件ANSYS构建复合材料波纹板模型,预测压缩载荷下复合材料波纹板的刚度,研究纤维体积分数和波纹比对刚度影响。结果表明,纤维波纹对复合材料刚度有很大的影响,尤其是E_x的下降趋势非常明显;在纤维最大偏转角处,试样易发生剪切破坏;波纹比对波纹板刚度影响的变化趋势几乎不受纤维体积含量的影响,实验结果与ANSYS模拟结果有较好的一致性。

关键词: 波纹, 有限元, 最大偏转角, 刚度

Abstract: The effects of uniform waviness on the stiffness of composite laminates have been investigated numerically and experimentally. The VARI process is employed to manufacture the specimens with fiber waviness,and the compression test is conducted to obtain the major Young's modulus and Poisson's ratio. Based on the finite element analysis software ANSYS, the laminates with fiber waviness is simulated and the stiffness is predicted for different fiber volume contents and waviness ratios. The results show that the fiber waviness has significant influence on the stiffness of composite laminates. Especially the E_x has a great decrease. The shear failure is prone to initiate at the position of the maximum fiber off-axis angle for most specimens. Furthermore,with the increase of waviness ratio, the fiber volume content has little influence on the variation trend of stiffness. The predictions agree well with the experimental data.

Key words: fiber waviness, finite element, fiber off-axis angle, stiffness

中图分类号:

TB332

吴维清, 朱俊, 王继辉, 舒明杰. 纤维波纹对复合材料层合板刚度影响研究[J]. 复合材料科学与工程, 2015, 0(12): 41-47.

WU Wei-qing, ZHU Jun, WANG Ji-hui, SHU Ming-jie. EFFECTS OF FIBER WAVINESS ON THE STIFFNESS OF COMPOSITE LAMINATES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(12): 41-47.

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