针对复合材料构件固化变形问题, 分析了复合材料热压罐成型固化过程的多场耦合关系, 考虑模具的作用, 建立了柱面复合材料构件固化过程的有限元分析模型。基于此模型, 研究了模具材料、 模具厚度和模具形式对柱面复合材料构件固化变形的影响。结果表明： 模具对柱面件固化变形的影响较大, 模具材料与构件材料热膨胀系数（CTE）不匹配程度影响构件回弹角的大小; 模具的厚度不同, 导致构件的不同回弹角; 采用阴模时, 构件回弹角小于阳模的, 且回弹方向相反。
The multi-field coupling relationship in curing process was analyzed according to the problem of process-induced deformation of the composite part prepared in autoclave. Finite element analysis model of curing process of the composite part was developed with mould effect considered. Based on the FEA model, effects of the material, thickness and form of the tool on the process-induced deformation of the part were studied. The results show that the mould has a great effect on the process-induced deformation. The CTE mismatch between the part and the mould affects spring-in angle of the part. The difference of thickness of the tool causes different spring-in angle. The deformation of the part prepared with female mould is less than that of male mould and the direction of deformation is opposite.
参考文献
| [1] | Loos A C, Springer G S. Curing of epoxy matrix composites[J]. Journal of Composite Materials, 1983, 17(2): 135-169. |
| [2] | Bogetti T A, Gillespie Jr J W. Process induced stress anti deformation in thick section thermoset composite laminates [J].Journal of Composite Materials, 1992, 26: 626-660. |
| [3] | Zeng X, Raghavan J. Role of tool-part interaction in process- induced warpage of autoclave- manufactured composite structures [J]. Composites: Part A, 20100 41: 1174-1183. |
| [4] | 张纪奎,郦正能.关志东.热固性复合材料固化过程三维有限元模拟和变形预测[J].复合材料学报,2009.26(1):174-178. |
| [5] | 张纪奎.郦正能.关志东.热固性树脂基复合材料同化变形影响因素分析[J].复合材料学报,2009,26(1):179-184. |
| [6] | 戴棣,乔新.刘善国.单曲面复合材料层合构件的固化变形计算[J].航空制造技术,1999(5):46-58. |
| [7] | Ersoy N. Modelling of the spring in phenomenon in curved parts made of a thermosetting composite [J]. Composites: Part A, 2010, 41: 410-418. |
| [8] | Abdul R A A. Efficient numerical techniques for predicting process-induced stresses and deformation in composite structures [D]. Britain: The University of British Columbia, 2007. |
| [9] | 陈烈民.杨宝宁.复合材料的力学分析[M].北京:中国科学技术出版社,2008:33-50. |
| [10] | 戴棣.复合材料结构件的固化变形研究[D].南京:南京航空航天大学,1999. |
| [11] | Johnston A. An integrated model of the development of process- induced deformation in autoclave processing of composites structures [D]. Vancouver: The University of British Columbia, 1997. |
| [12] | Ersoy N. Development of spring- in angle during cure of a thermosetting composite [J]. Composites: Part A, 2005, 36: 1700-1706. |
| [13] | 张铖.大型复合材料结构热压罐工艺温度场权衡设计[D].哈尔滨:哈尔滨工业大学,2009. |
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