模具对复合材料构件固化变形的影响分析

岳广全; 张嘉振; 张博明

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模具对复合材料构件固化变形的影响分析

1.
中国商飞北京民用飞机技术研究中心, 北京 102211;
2.
哈尔滨工业大学复合材料与结构研究所, 哈尔滨 150080;
3.
北京航空航天大学材料科学与工程学院, 北京 100191

详细信息

中图分类号: TB332
计量
- 文章访问数: 1020
- PDF下载量: 769
- 被引次数: 0
出版历程
- 收稿日期: 2012-08-23
- 修回日期: 2012-12-20
- 刊出日期: 2013-08-15

Influence of mold on cure-induced deformation of composites structure

1.
Beijing Aeronautical Science & Technology Research Institute of COMAC, Beijing 102211, China;
2.
Centre for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China;
3.
School of Materials Science and Engineering, Beihang University, Beijing 100191, China

More Information

Corresponding author: 岳广全,博士,工程师,从事树脂基复合材料成型工艺的研究 E-mail:hitfxz@163.com

摘要

摘要: 通过光纤光栅的方法实验研究了在热压罐成型工艺过程中, 复合材料构件由金属固化模具与复合材料构件热不匹配导致的沿厚度方向和面内的固化残余应力发展, 得到了固化后残余应力沿构件厚度方向和面内的分布情况, 并分析了该残余应力分布的产生机制以及对构件固化后变形的影响。结果表明: 复合材料与模具之间的热不匹配导致的固化残余应变沿构件厚度方向呈梯度分布, 靠近模具端大于远离模具端, 并且该应变会引起构件固化后的翘曲变形, 变形以沿纤维方向为主。
- 复合材料 /
- 固化工艺 /
- 残余应力 /
- 固化变形 /
- 模具
Abstract: Experiments with fibre Bragg grating were done to study the residual stresses distribution in composites structure during the autoclave curing process. From results of experiments, residual stresses development and distribution in thickness direction and planar have been obtained. And then the mechanism and influence of residual stresses on cure-induced deformation for composites structure were studied. The results show that the mismatch between composites and mold induce the strain gradient in thickness direction. The strain close to the mold is more than that away from the mold. And then the strain will cause deformation of composites structure after curing process, and the deformation in fibre direction is dominating.
- composites /
- curing process /
- residual stresses /
- cure-induced deformation /
- mold