采用胶接共固化整体成型工艺制备了L形筋条,研究了模具配合、填充料、曲率半径、吸胶工艺等因素对L形筋条纤维密实和制造缺陷的影响规律,分析了缺陷形成机制.结果表明:厚度不均、架桥、富脂是L形筋条中存在的主要缺陷;采用软模辅助成型和加入适量填充料可改善筋条拐角区的压力分布,增大曲率半径和采用预吸胶工艺可降低拐角效应,从而可有效提高筋条纤维密实程度.
参考文献
[1] | HUBERT P;VAZIRI R;POURSARTIP A .A two-dimensional flow model for the process simulation of complex shape composite laminates[J].International Numerical Methods in Engineering,1999,44:1-26. |
[2] | Hubert P.;Poursartip A. .A review of flow and compaction modelling relevant to thermoset matrix laminate processing[J].Journal of Reinforced Plastics and Composites,1998(4):286-318. |
[3] | Min Li;Charles L. Tucker III .Modeling and simulation of two-dimensional consolidation for thermoset matrix composites[J].Composites, Part A. Applied science and manufacturing,2002(6):877-892. |
[4] | 李艳霞,李敏,张佐光,顾轶卓.L形复合材料层板热压工艺密实变形过程的数值模拟[J].复合材料学报,2008(03):78-83. |
[5] | Pascal Hubert;Anoush Poursartip;Composites Group .Aspects of the Compaction of Composite Angle Laminates: An Experimental Investigation[J].Journal of Composite Materials,2001(1):2-26. |
[6] | 常文 .复合材料制件热压缺陷与构型要素关联规律实验研究[D].北京:北京航空航天大学,2008. |
[7] | Hoa SV;Naji MI .Curing of thick angle-bend thermoset composite part: curing cycle effect on thickness variation and fiber volume fraction[J].Journal of Reinforced Plastics and Composites,1999(8):702-723. |
[8] | Malak I. Naji;Suong V. Hoa .Curing of thick angle-bend thermoset composite part: curing process modification for uniform thickness and uniform fiber volume fraction distribution[J].Journal of Composite Materials,2000(20):1710-1755. |
[9] | 谢富原,王雪明,李敏,张佐光.T形加筋板热压罐成型过程压力分布与树脂流动实验研究[J].复合材料学报,2009(06):66-71. |
[10] | 李艳霞 .先进复合材料热压流动/压缩行为数值模拟与工艺质量分析[D].北京:北京航空航天大学,2008. |
[11] | GUTOWSKI T G;MORIGAKI T Cai.The consolidation of laminate composites[J].Journal of Composite Materials,1987(21):173-188. |
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