针对热压工艺特点,将预浸料视为可变形的多孔介质,通过体积平均,建立了固化过程中温度、纤维应力和树脂流动多物理场耦合的数学模型.该模型考虑了纤维变形和体积分数变化的影响,反映了渗透率和纤维体积分数的关系.对于复合材料层合平板热压工艺,通过进一步简化,给出了一维固化方程,并进行了有限元数值分析.数值模拟中采用ALE移动网格方法来处理动边界问题.计算结果表明,与非耦合的经典模型相比,该模型给出的结果能更好地与实验吻合,层合板逐层压缩现象也和实验结果一致.而且该模型能预测树脂的排出量和纤维层间纤维体积分数的变化.
参考文献
| [1] | Springer G S.Resin flow during the cure of reinforced composites[J].Journal of Composite Materials,1982,16(5):400-410. |
| [2] | Loos A C,Springer G S.Curing of epoxy matrix composites[J].Journal of Composite Materials,1983,17(2):135-169. |
| [3] | Gutowski T G,Morigaki T,Cai Z.The consolidation of laminate composites[J].Journal of Composite Materials,1987,21(2),172-188. |
| [4] | 李培超,孔祥言,卢德唐.饱和多孔介质流固耦合渗流的数学模型[J].水动力学研究与进展,2003,18(4):419-426.Li Peichao,Kong Xiangyan,Lu Detang.Mathematical model-ing of flow in saturated porous media on account of fluid-struc-ture coupling effect[J].Journal of Hydrodynamics,2003,18 (4),419-426. |
| [5] | 李辰砂,张博明,王殿富,等.用数值模型研究复合材料固化过程规律[J].复合材料学报,2000,17(4):92-99.Li Chensha,Zhang Boming,Wang Dianfu,et al.Studying the curing process of composite by numerical model[J].Acts Materiae Compositae Sinica,2000,17(4),92-99. |
| [6] | 谭华,晏石林.热固性树脂基复合材料固化过程的三维数值模拟[J].复合材料学报,2004,21(6):167-172.Tan Hua,Yan Shilin.Three-dimensional simulation of curing process for thermoset composites[J].Acta Materiae Compositae Siniea,2004,21(6),167-172. |
| [7] | 张纪奎,关志东,郦正能.热固性复合材料固化过程中温度场的三维有限元分析[J].复合材料学报,2006,23(2):175-179.Zhang Jikui,Guan Zhidong,Li Zhengneng.Three-dimension-al finite element analysis for the temperature field of thermoset composites during cure process[J].Acta Materiae Compositae Sinica,2006,23(2):175-179. |
| [8] | Whitaker S.The method of volume averaging[M].Netherlands:Kluwer,1999,2-3. |
| [9] | 章德根,刘日武.多孔介质中流体流动的细观-宏观模拟[J].岩石力学与工程学报,2000,19(增刊):1006-1013.Zhang Degen,Liu Yuewu.The micro-macroscopic modeling for fluid flow in porous media[J].Chinese Journal of Rock Mechanics and Engineering,2000,19(suppl):1006-1013. |
| [10] | Tucker Ⅲ C L.Heat transfer and reaction issues in liquid composite molding[J].Polymer Composites,1996,17 (1) 60-72. |
| [11] | Whitaker S.Improved constraints for the principle of local thermal equilibrium[J].Industrial Engineering Chemical Research,1991,30(5):983-997. |
| [12] | Slattery J C.Momentum,energy and mass transfer in continua[M].Huntington,NY:Krieger,1981:30-52. |
| [13] | 简抗抗,张佐光,顾轶卓,孙志杰.不同纤维堆积状态下饱和渗透率实验研究[J].复合材料学报,2006,23(1):31-36.Jian Kangkang,Zhang Zuoguang,Gu Yizhuo,Sun Zhijie.Experimental research of saturated permeability with different fiber stacking states[J].Acts Materiae Compositae Sinica,2006,23(1):31-36. |
| [14] | Gutowski TG,Cai Z,Bauer S,Boucher D,KingeryJ,Wineman S.The consolidation of laminate composites[J].Journal of Composite Materials,1987,21(2):650-669. |
| [15] | Gebart B R.Permeability of unidirectional reinforcements forRTM[J].Journal of Composite Materials,1992,26(8):1100-1133. |
| [16] | Lee Wi,Loos A C,Springer G S.Heat of reaction,degree of cure and viscosity of Bercules 3501-6 resin[J].Journal of Composite Materials,1982,16(6),510-520. |
| [17] | Blest D C,Duffy B R,McKee S,et al.Curing simulation of thermoset composites[J].Composites Part A,1999,30 (11):1289-1309. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%