含分层复合材料结构压缩强度研究

复合材料科学与工程 ›› 2020, Vol. 0 ›› Issue (12): 64-73.

含分层复合材料结构压缩强度研究

张东哲¹, 林智育^1*, 林仁邦², 杨颜志², 张霞³

1.机械结构力学及控制国家重点实验室,南京210016;
2.上海市空间飞行器机构重点实验室,上海201109;
3.上海复合材料科技有限公司,上海201109

收稿日期:2020-01-14 发布日期:2020-12-30
通讯作者: 林智育(1980-),男,博士,副教授,主要从事复合材料结构损伤容限/耐久性等领域的教学和科研工作,linzhiyu@nuaa.edu.cn。
作者简介:张东哲(1994-),男,硕士,主要从事复合材料结构失效分析方面的研究。
基金资助:
上海市空间飞行器机构重点实验室开放课题(YYHT-F805201808012)

STUDY OF COMPRESSIVE STRENGTH OF COMPOSITE STRUCTURE WITH DELAMINATION

ZHANG Dong-zhe¹, LIN Zhi-yu^1*, LIN Ren-bang², YANG Yan-zhi²

1. State Key Laboratory of Mechanics and Control for Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. Shanghai Key Laboratory of Spacecraft Mechanism, Shanghai 201109, China

Received:2020-01-14 Published:2020-12-30

摘要/Abstract

摘要： 对含有不同预置分层的复合材料层合板进行压缩试验,记录不同分层损伤下复合材料层合板的极限载荷和破坏模式,并分析预置分层对复合材料层合板压缩强度的影响。基于ABAQUS平台建立含预置分层复合材料结构的有限元模型,编写UMAT子程序引入Hashin准则和Camanho准则研究结构纤维或基体损伤产生及演化,采用虚拟裂纹闭合技术(VCCT)结合B-K准则计算分层扩展,并将仿真分析结果与试验结果对比,验证仿真模型的正确性。采用相同方法进一步对含分层曲板进行分析,分析曲板弧度、分层尺寸、分层位置对曲板破坏模式以及压缩强度的影响。结果表明:弧度较大的曲板相比平板,其剩余压缩强度较高;弧度较小的曲板,分层尺寸越大剩余压缩强度越小,分层位置越深剩余压缩强度越大。

关键词: 复合材料层板, 虚拟裂纹闭合技术, 预置分层, UMAT子程序

Abstract: The compression test of composite laminates with different delamination damage was carried out, the ultimate load and failure mode of composite laminates with different delamination damage was recorded, and the influence of delamination on the compressive strength of composite laminates was analyzed. Based on ABAQUS platform, a finite element model of composite structure with delamination was established. Hashin criterion and Camanho criterion were introduced by wrote UMAT subroutines to study the generation and evolution of fiber or matrix damage. Virtual crack closure technology (VCCT) was used in combination with B-K criterion to calculate delamination expansion. Finally, the simulation results are compared with the test results to verify the correctness of the simulation model. Using the same method, the influence of radian, size and position of delamination on failure mode and compressive strength of curved composite laminates was analyzed. The results show that the residual compressive strength of curved composite laminates with larger radian is higher than that of flat composite laminates. If the radian of the curved composite laminates is small, the larger the delamination size, the smaller the residual compressive strength of the curved composite laminates. The deeper the position of delamination, the greater the residual compressive strength of the curved composite laminates.

Key words: composite laminate, VCCT, delamination, UMAT subroutine

中图分类号:

TB332

张东哲, 林智育, 林仁邦, 杨颜志, 张霞. 含分层复合材料结构压缩强度研究[J]. 复合材料科学与工程, 2020, 0(12): 64-73.

ZHANG Dong-zhe, LIN Zhi-yu, LIN Ren-bang, YANG Yan-zhi. STUDY OF COMPRESSIVE STRENGTH OF COMPOSITE STRUCTURE WITH DELAMINATION[J]. COMPOSITES SCIENCE AND ENGINEERING, 2020, 0(12): 64-73.

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