整体化复合材料结构分阶段固化变形预报方法及其实验验证

江天; 徐吉峰; 刘卫平; 叶金蕊; 贾丽杰; 张博明

整体化复合材料结构分阶段固化变形预报方法及其实验验证

1.
北京航空航天大学材料科学与工程学院, 北京 100191;
2.
中国商飞北京民用飞机技术研究中心, 北京 100083;
3.
上海飞机制造有限公司航空制造技术研究所, 上海 200436

详细信息

中图分类号: TB332
计量
- 文章访问数: 932
- PDF下载量: 976
- 被引次数: 0
出版历程
- 收稿日期: 2012-09-29
- 修回日期: 2012-11-20
- 刊出日期: 2013-10-15

Simulation and verification of cure-induced deformation by stages for integrated composite structure

1.
School of Materials Science and Engineering, Beihang University, Beijing 100191, China;
2.
Beijing Aeronautical Science & Technology Research Institute, COMAC, Beijing 100083, China;
3.
Aeronautical Manufacturing Technology Institute, Shanghai Aircraft Manufacturing Co, Shanghai 200436, China

More Information

Corresponding author: 张博明, 博士, 教授, 主要从事树脂基复合材料的研究 E-mail: zbm@buaa.edu.cn

摘要

摘要: 通过测试分析了T800/环氧预浸料固化过程中性能参数的变化规律; 针对热压罐工艺条件下复合材料整体化结构分阶段成型的特点,提出了一种基于应力传递的分阶段固化变形的有限元模拟方法; 对于不同成型工艺的工型加筋壁板结构,将分阶段模拟得出的变形结果与测试结果进行了对比,并分析了成型工艺与变形量之间的关系。结果表明,本文中提出的模拟方法能够准确预报整体化结构的固化变形,变形与成型工艺密切相关,针对特定的结构与铺层,采用合理的工艺过程能够有效减小构件的固化变形。
- 复合材料 /
- 整体化 /
- 分阶段 /
- 固化变形 /
- 有限元分析
Abstract: The developing law of T800/epoxy prepreg property parameters during curing process was analyzed through tests. A finite element analysis (FEA) simulation method of staged cure-induced deformation based on stress transfer was proposed in view of phased molding of composite integrated structures under the autoclave conditions. For I-shaped stiffened structures fabricated in different processes, deformation results predicted by the phased simulation were compared to experimental results and relationships between different manufacture schemes and deformations were also analyzed. The results show that the simulation method proposed in this paper can accurately predict the cure-induced deformations for the integrated structures, deformation is closely correlated with fabrication process, and selecting appropriate fabrication process for special structure and lay-up can effectively reduce the cured-induced deformations of composite structures.
- composite /
- integrated /
- by stages /
- cure-induced deformation /
- finite element analysis (FEA)