建立了复合材料热压工艺的三维热-化学-应力耦合数学模型.该模型考虑了整个工艺周期过程中的热-化学应变、材料的黏弹性效应、各向异性及玻璃化转变温度与固化度的关系.其中热-化学模型可采用完全耦合的形式求解,而应力模型则可采用单向耦合的形式求解.对AS4/3501-6层合平板的热压工艺过程用有限元方法进行了数值模拟,得到的层合板翘曲度与实验结果相符.计算结果表明,层合板厚度减小或长度增大,都会使翘曲变形增大,而工艺压强对翘曲变形影响很小.层合板的翘曲变形随着模具与层合板热膨胀系数差距的变小而减小.
参考文献
| [1] | 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].Acta Materiae Compositae Sinica,2000,17(4):92-99. |
| [2] | 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 Hue,Yan Shilin.Three-dimensional simulation of curing process for thermoset composites[J].Acta Materiae Compositae Sinica,2004,21(6):167-172. |
| [3] | 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. |
| [4] | 郭兆璞,陈浩然,杨正林.复合材料层合板在加工固化后期降温速率对残余热应力的影响[J].计算结构力学及其应用,1995,12(4):387-393.Guo Zhaopu,Chen Haoran,Yang Zhanglin.Influence of cooling rates on thermal stresses in composite laminates during the cool-down phase of cure cycle[J].Chinese Journal of Compitational Mechanics,1995,12(4):387-393. |
| [5] | 郭兆璞,陈浩然,段滋华.复合材料层合板粘弹性固化残余应力分析[J].计算结构力学及其应用,1996,13(4):401-407.Guo Zhaopu,Chen Haoran,Duan Zihua.Thermo viscoelastic analysis of curing residual stresses in composite laminates[J].Chinese Journal of Compitational Mechanics,1996,13(4):401-407. |
| [6] | 官霆,孙良新,邢丽英.复合材料叠层板固化成型后的变形分析计算[J].宇航材料工艺,2006,36(1):34-37.Guan Ting,Sun Liangxin,Xing Liying.Composite laminates deformation analysis and calculation after curing[J].Aerospace Materials and Technology,2006,36(1):34-37. |
| [7] | 戴棣,乔新.粘弹性基体复合材料的固化残余应力和曲率变化[J].复合材料学报,2000,17(3):38-41.Dai Di,Qiao Xin.Variation of cure residual stress and curvature of resin matrix composite laminates[J].Acta Materiae Compositae Sinica,2000,17(3):38-41. |
| [8] | Ruiz E,Trochu F.Numerical analysis of cure temperature and internal stresses in thin and thick RTM parts[J].Composite Part A,2005,36(6):806-826. |
| [9] | Antonucci V,Cusano A,Giordano M,Namer J,Nicolais L.Cure-induced residual strain build-up in a thermoset resin[J].Composite Part A,2006,37(4):592-601. |
| [10] | D'Amato E.Numerical modeling and experimental studies for shape and dimensional control in the curing process of textile composites[J].Composite Structures,2007,81(1):11-20. |
| [11] | Harper B D,Weitsman Y.Residual thermal stresses in an unsymmetrical crossply graphite/epoxy laminate[C]//Proceedings of Structures,Structural Dynamics and Materials Conference.New York:American Institute of Aeronautics and Astronautics,Inc,1981:325-332. |
| [12] | Wiersma H W,Peeters J B,Akkerman R.Prediction of springforward in continuous-fiber/polymer L-shaped parts[J].Composite Part A,1998,29(11):1333-1342. |
| [13] | White S R,Kim Y K.Process-induced residual stress analysis of AS4/3501-6 composite material[J].Mechanics of Composite Materials and Structures,1998,5(12):153-186. |
| [14] | 周光泉,刘孝敏.粘弹性理论[M].合肥:中国科技大学出版社,1996:79-82.Zhou Guangquan,Liu Xiaomin.Viscoelasticity theory[M].Hefei:University of Science and Technology of China Press,1996:79-82. |
| [15] | Agarwal B D,Broutman L J.Analysis and performance of fiber composites[M].2nd ed.New York:John Wiley and Sons,1990:112-145. |
| [16] | Kim K S,Hahn H T.Residual stress development during processing of graphite/epoxy composites[J].Composites Science and Technology,1989,36(2):121-132. |
| [17] | Lee Wi,Loos A C,Springer G S.Heat oI reaction,degree of cure and viscosity of Hercules 3501-6 resin[J].Journal of Composite Materials,1982,16(6):510-520. |
| [18] | Kim J,Moon T J,Howell J R.Cure kinetic model,heat of reaction and glass transition temperature of AS4/3501-6 graphite epoxy prepregs[J].Journal of Composite Materials,2002,36(21):2479-2498. |
| [19] | Pagliuso S.Warpage,a nightmare for composite parts producers[J].Progress in Science and Engineering of Composites,1992:1617-1623. |
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