根据有效应力准则和达西定律建立了描述复合材料固化压实过程层合板压缩和树脂流动的二维有限元方程,节点自由度为位移和树脂压力,采用向后差分方法直接耦合积分求解以提高收敛速度.数值计算结果表明:随着层合板厚度的增加,厚度压缩率减小,固化压实所需时间增加,树脂在厚度方向的不均匀性逐渐增加.对于厚度较大的层合板,采用提高固化压力和双面吸胶两种工艺对比情况说明,后者可以显著提高压实程度并得到相对均匀的树脂含量分布.
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] | Gutowski T G.A resin flow/fiber deformation model for composites[J].SAMPE Quarterly,1985,16(4):58-64. |
[3] | Tredoux L,Van der Westhuizen J.Development of a numerical code that simulates combined heat transfer,resin flow and compaction during composites processing[J].Composites Manufacturing,1995,6(2):85-92. |
[4] | Young W B.Consolidation and cure simulations for laminated composites[J].Polymer Composites,1996,17(1):142-148. |
[5] | Costa V A F,Sousa A C M.Modeling of flow and thermokinetics during the cure of thick laminated composites[J].International Journal of Thermal Sciences,2003,42 (1):15-22. |
[6] | Shin D D,Hahn H T.Compaction of thickness composites:Simulation and experiment[J].Polymer Composites,2004,25(1):49-59. |
[7] | Yan X Q.Consolidation simulation of composites laminates:Formulation and validation verification[J].Polymer Composites,2005,26(6):813-822. |
[8] | Hubert P,Vaziri R,Poursartip A.A two dimensional flow model for the process simulation of complex shape composite laminates[J].International Journal for Numerical Methods in Engineering,1999,44(1):1-26. |
[9] | 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-dimensional finite element analysis for the temperature field of thermoset composites during cure process[J].Acta Materiae Compositae Sinica,2006,23(2):175-179. |
[10] | Ciriscioli P R,Wang Q L,Springer G S.Autoclave curingcomparisons of model and test result[J].Journal of Composite Materials,1992,26(1):90-102. |
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