复合材料层合板损伤区域扩展全过程分析

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (8): 36-41.

复合材料层合板损伤区域扩展全过程分析

陈星杰¹, 周仕刚^1*, 宫占锋², 罗腾腾²

1.同济大学航空航天与力学学院,上海200092;
2.上海飞机设计研究院,上海200232

收稿日期:2017-04-17 出版日期:2017-08-28 发布日期:2017-08-28
通讯作者: 周仕刚(1963-),男,教授,主要从事复合材料结构设计与教学工作,zhoushig@aliyun.com。
作者简介:陈星杰(1991-),男,硕士,主要从事复合材料力学方面的研究。

THE WHOLE PROCESS ANALYSIS OF DAMAGE AREA EXPANSION OF COMPOSITE LAMINATES

CHEN Xing-jie¹, ZHOU Shi-gang^1*, GONG Zhan-feng², LUO Teng-teng²

1.School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China;
2.Shanghai Aircraft Design and Research Institute, Shanghai 200232, China

Received:2017-04-17 Online:2017-08-28 Published:2017-08-28

摘要/Abstract

摘要： 对碳纤维NCF层合板进行了2组准静态压痕试验。第1组采用不同的压头尺寸探究不同压头直径对层合板损伤区域和面积的影响;第2组进行固定压头尺寸的重复试验,使用非接触空气耦合超声波扫描试样损伤情况,研究静压痕力、凹坑深度、损伤面积三者之间的联系。利用Abaqus有限元软件,根据Hashin准则和内聚力单元的结合,对第2组层合板准静态压痕试验进行全过程的损伤扩展分析。分析结果表明,基体拉伸的破坏是层合板最容易出现的破坏,而且其损伤区域涵盖了其他4种损伤区域。凹坑深度与损伤面积存在一定联系,试验开始阶段凹坑增加速度缓慢,损伤面积增加速度较快;接近极限载荷时,凹坑深度增加速度加快,损伤面积增加速度减缓。

关键词: 静压痕力, Hashin准则, 内聚力单元, 损伤扩展

Abstract: Two groups of quasi-static indentation tests were carried out on carbon fiber NCF laminates. In the first group, the influence of different head diameter on the damage area was studied by using different indenter sizes. In the second group, the repeated test of fixed head size was carried out to study the relationship between the static indentation force, the dent depth and the damage area by using the non-contact air-coupled ultrasonic scanning sample. Based on the Hashin criterion and the cohesive element, the whole process damage propagation analysis of the second groups of laminates was carried out by using Abaqus software. The results indicate that the tensile failure of matrix is the most easily damaged, and the damage area covers the other 4 kinds of damage areas. There is a connection between dent depth and damage area. At the beginning of the test, the dent depth increases slowly, the damage area increases fast; close to the ultimate load, the dent depth increases fast, the damage area increases slowly.

Key words: static indentation force, Hashin criterion, cohesive element, damage propagation

中图分类号:

TB332

陈星杰, 周仕刚, 宫占锋, 罗腾腾. 复合材料层合板损伤区域扩展全过程分析[J]. 玻璃钢/复合材料, 2017, 0(8): 36-41.

CHEN Xing-jie, ZHOU Shi-gang, GONG Zhan-feng, LUO Teng-teng. THE WHOLE PROCESS ANALYSIS OF DAMAGE AREA EXPANSION OF COMPOSITE LAMINATES[J]. Fiber Reinforced Plastics/Composites, 2017, 0(8): 36-41.

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