RESEARCH AND NUMERICAL SIMULATION OF THE IN-SITU CURINGOF SYMMETRIC FRP LARGE CONES

Abstract

Abstract: The forming of FRP large cones with internal curing process is studied with FEM (finite element method). The internal curing process simulation program is written based on ANSYS, and the temperature and degree of curing change is numerically simulated. The result shows that the simulation result corresponds to internal curing change law, approximating the experiment data, which proves the accuracy of the simulation. During the curing process of the FRP large cones, the heat passes from the inner layer of the composite to its outer layer and the peak temperature in the curing process becomes higher from the inner layer to outer layer. In the range of curable thickness, curing time becomes shorter gradually from the inner layer to outer layer. When the symmetrical FRP large cones get thicker, the time reaching to peak gets later, the peak becomes higher and the curing time becomes later. FRP large cones of 600~660 MW steam turbine generator completes solidified part for the thickest 7 cm in the internal hear-curing process according to the simulation result. More than 7 cm parts of FRP large cones can′t receive heat, because the FRP large cones is too thick and inner layer cured parts influence on composite performance of heat conduction. Within the prescribed time of internal heat-curing process, FRP large cones large diameter and small diameter can′t synchronously complete task of curing. Parts of no internal heating curing can realize full curing after curing process.

Key words: FRP large cones, symmetrical shape, internal heat-curing, ANSYS simulation

CLC Number:

TB332

CHEN Hai-yan, ZHANG Xi, XU Jia-zhong, WANG Yan. RESEARCH AND NUMERICAL SIMULATION OF THE IN-SITU CURINGOF SYMMETRIC FRP LARGE CONES[J]. Fiber Reinforced Plastics/Composites, 2016, 0(3): 49-54.

References

[1] 李瑞, 王益轩, 郭艳利, 等.大型汽轮发电机定子端部复合材料大锥环的设计与制造[J]. 上海大中型电机, 2013(1):19-23.
[2] 高丹, 王益轩, 梁瑜洋, 等. 大型汽轮发电机复合材料大锥环的设计与研究[J]. 大电机技术, 2015(2):18-22.
[3] 田开谟, 刘再阳. 60万千瓦汽轮发电机玻璃钢大锥环的研制[J]. 纤维复合材料, 1992(4):5-10.
[4] 姚国萍, 张仁龙, 周芩芩, 等. 1000MW发电机定子端部玻璃钢大锥环的国产化研究[J]. 绝缘材料, 2006(1):4-6.
[5] 姚国萍. 百万级发电机大锥环实现国产化[N]. 中国工业报, 2006(B02).
[6] 周芩芩. 600~660MW汽轮发电机用环氧浸渍缠绕玻璃钢大锥环的研制[J]. 上海大中型电机, 2004(4):43.
[7] 陈利民, 吴东, 毕赤毅, 等. 缠绕复合材料固化工艺研究[J]. 工程塑料应用, 2004, 32(10):26-27.
[8] 许家忠, 乔明, 尤波, 等. 纤维缠绕复合材料壳体原位成型工艺研究[J]. 材料科学与工艺, 2009, 17(2):191-194.
[9] 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.
[10] COFFENBERRY B. S., HANBER D. E., CIRINO M.. Lost cost alternative in-situ consolidated thermoplastic composite structures[R]. 38th International SAMPE Symposium, California: Anaheim, 1993: 1640-1650.
[11] Fernlund G, Osooly A, Poursartip A, et al. Finite element based prediction of process-induced deformation of autoclaved composite structures using 2D process analysis and 3D structural analysis[J]. Joumal of Composite Structures, 2003, 62: 22114.
[12] 郭战胜, 杜善义, 张博明, 等. 厚截面树脂复合材料的温度场研究[J]. 复合材料学报, 2004, 21(5):122-127.
[13] 杨梅, 晏石林, 谭华. RFI工艺过程的数值模拟[J]. 武汉理工大学学报, 2005, 27(12):10-13.
[14] 王新颖. 复合材料壳体热缠绕过程数值模拟研究[D]. 哈尔滨:哈尔滨理工大学, 2011: 12-13.
[15] 周忠平. 600~660MW汽轮发电机缠绕玻璃钢大锥环: CN 2720705Y[P]. 2005-08-24.