针对复合材料T型整体化结构固化成型的工艺过程,分析了结构经固化而导致翘曲变形的原因;建立了整体化结构翘曲变形预测的理论模型及分析方法;运用有限单元法计算了T型结构件的内部温度和固化度的分布,以及由于内部化学反应放热、固化引起的体积收缩和材料各个方向热膨胀系数的不一致而导致的结构翘曲变形量,同时考虑了树脂在固化过程中材料参数随着固化度的变化而变化;并研究了翘曲变形与T型结构件尺寸之间的关系.研究表明,选择合适的角材高度、宽度以及倒角半径可以有效地降低结构的翘曲变形.
参考文献
| [1] | Wang J,Kelly D.Finite element analysis of temperature induced stresses and deformations of polymer composite components[J].Journal of Composite Materials,2000,34(17):1456-1471 |
| [2] | Jung W K,Chu W S,Ahn S H.Measurement and compensation of spring-back of a hybrid composite beam[J].Journal of composite materials,2007,41(7):851-864. |
| [3] | Fernlund G,Osooly A,Poursartip A,et al.Finite element based prediction of processed-induced deformation of autoclaved composite structures using 2D process analysis and 3D structural analysis[J].Composite Structures,2003,62(2):223-234. |
| [4] | Bogetti T A,Gillespie J W.Process-induced stress and deformation in thick-section thermoset composite laminates[J].Journal of Composite Materials,1992,26(5):626-660. |
| [5] | 戴福洪,张博明,杜善义.复合材料非对称正交薄层板的固化变形[J].复合材料学报,2006,23(4):164-168.Dai Fuhong,Zhang Boming,Du Shanyi.Cured shape of crossply thin unsymmetric composite laminates[J].Acta Materiae Compositae Sinica,2006,23(4):164-168. |
| [6] | 戴棣,乔新.粘弹性基体复合材料层合板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. |
| [7] | Fernlund G,Rahman N,Courdji R,et al.Experimental and numerical study of the effect of cure cycle,tool surface,geometry,and lay-up on the dimensional fidelity of autoclaveprocessed composite parts[J].Composites Part A,2002,33(3):341-351. |
| [8] | 邓火英,张佐光,顾秩卓,李敏.L形层板真空袋成型缺陷的实验研究[J].复合材料学报,2007,24(4):34-39.Deng Huoying,Zhang Zuoguang,Gu Yizhuo,Li Min.Experimental research on defects of L-shape laminates in vacuum-bag process[J].Acta Materiae Compositae Sinica,2007,24(4):34-39. |
| [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] | Zobeiry N.Viscoelasticity constitutive models for evaluation of residual stresses in thermoset composites during cure[M].Canada:The University of British Columbia,2008:93. |
| [11] | Dong C S,Zhang C,Liang Z Y,et al.Dimension variation prediction for composites with finite element analysis and regression modeling[J].Composites Part A,2004,35(8):735-746. |
| [12] | Zhu Q,Geubelle P H.Dimensional accuracy of thermoset composites:Simulation of process-induced residual stresses[J].Journal of Composite Materials,2001,35(24):2171-2205. |
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