基于非完善界面单向纤维复合材料弹性模量预测与应力分析

玻璃钢/复合材料 ›› 2016, Vol. 0 ›› Issue (9): 33-38.

基于非完善界面单向纤维复合材料弹性模量预测与应力分析

邓志康, 邓京兰¹, 王继辉², 黄志强^3*

1.武汉理工大学理学院,武汉430070;
2.武汉理工大学材料科学与工程学院,武汉430070;
3.武汉工程大学机电工程学院,武汉430205

收稿日期:2016-04-28 出版日期:2016-09-28 发布日期:2016-09-28
通讯作者: 黄志强(1963-),男,博士,副教授,主要从事断裂与损伤方面的研究。
作者简介:邓志康(1991-),男,硕士,主要从事复合材料结构设计方面的研究。
基金资助:
武汉工程大学科学研究基金(K201326)

ESTIMATION OF ELASTIC MODULUS AND ANALYSIS OF STRESS OF UNIDIRECTIONAL FIBER COMPOSITES BASED ON IMPERFECT INTERFACE

DENG Zhi-kang¹, DENG Jing-lan¹, WANG Ji-hui², HUANG Zhi-qiang^3*

1.School of Science, Wuhan University of Technology, Wuhan 430070, China;
2.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;
3.School of Mechanical and Electrical Engineering, Wuhan Institute of Technology, Wuhan 430073, China

Received:2016-04-28 Online:2016-09-28 Published:2016-09-28

摘要/Abstract

摘要： 界面缺陷对复合材料的性能有着显著的影响,基于弹性力学以及能量原理基本理论,利用基于界面上应力连续而位移有一定突变的无厚度弹簧模型,对含界面缺陷的材料性能进行了探究。得出界面的非完善参数、纤维相体积分数对材料的纵向与横向弹性模量、泊松比以及应力的影响规律。并将计算结果与完善界面、开孔的经典结果以及实验数据进行了对比验证。计算结果表明,利用非完善界面参数预测含缺点界面的材料性能并进行应力分析比利用完善界面模型计算的结果更精确。

关键词: 界面缺陷, 弹性体, 非完善界面, 杨氏模量, 泊松比, 能量法, 数值分析

Abstract: The interface defects have a significant effect on the properties of the materials performance. In this paper, the spring model without thickness has been considered to investigate the composite properties with imperfect interface in the elastic theory and energy principle. The relationships between the imperfect parameter, the volume fraction of fiber, and the effective properties, including the effective longitudinal and transverse elastic modulus and Poisson′s ratio were studied. Meanwhile, the results for the imperfect interface were compared by the classical results of perfect interface and a hole at two limit cases, and the test data. The result for finite positive values of interface parameter shows that the interface parameter can be used to estimate the material properties with the interface defects.

Key words: defects, elasticity, imperfect interface, Young′s modulus, Poisson′s ratio, energy method, numerical analysis

中图分类号:

TB332

邓志康, 邓京兰, 王继辉, 黄志强. 基于非完善界面单向纤维复合材料弹性模量预测与应力分析[J]. 玻璃钢/复合材料, 2016, 0(9): 33-38.

DENG Zhi-kang, DENG Jing-lan, WANG Ji-hui, HUANG Zhi-qiang. ESTIMATION OF ELASTIC MODULUS AND ANALYSIS OF STRESS OF UNIDIRECTIONAL FIBER COMPOSITES BASED ON IMPERFECT INTERFACE[J]. Fiber Reinforced Plastics/Composites, 2016, 0(9): 33-38.

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