STUDY ON COMPOSITE MATERIAL CURING DEFORMATION OF ROOT TILE MOULD OF WIND POWER BLADE

Abstract

Abstract: The heat transfer-chemical reaction model and viscoelastic constitutive model of root tile mould of wind power blade are established to study the curing deformation of its composite material,and the reliability of the simulation results is verified by the monitoring results of fiber Bragg grating sensors. The research results show that extending the constant temperature time at high temperature can effectively improve the degree of curing reaction of the resin, but the effect of changing the heating rate and the constant time at low temperature on the degree of curing reaction is not obvious. The maximum axial deformation is at the flange edge, the flatness of the flange is not enough, therefore reducing the deformation of the flange is critical to control the manufacturing precision of the root tile mold. And its deformation is mainly determined by the geometry, size and layup sequence of the root tile mold. It is recommended to design rigid constraints to reduce the deformation.

Key words: wind power blade mould, composite material, curing deformation, finite element simulation

CLC Number:

TB332

HUANG Shang-hong, CHEN Zhong-li, LIU Ping-zhong, ZHANG Lei-da. STUDY ON COMPOSITE MATERIAL CURING DEFORMATION OF ROOT TILE MOULD OF WIND POWER BLADE[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(1): 47-51.

References

[1] LIAN J Y, XU Z B, RUAN X D. Analysis and control of cured deformation of fiber-reinforced thermosetting composites: A review[J]. Journal of Zhejiang University-Science A (Applied Physics & Engineering), 2019, 20(5): 311-333.
[2] 乔巍, 姚卫星, 马铭泽. 复合材料残余应力和固化变形数值模拟及本构模型评价[J]. 材料导报, 2019, 33(24): 4193-4198.
[3] 杨青, 卫原平, 刘卫平. 复合材料C/L型结构固化变形的影响因素分析[J]. 航空制造技术, 2019, 62(4): 87-94.
[4] DING A X, LI S X, SUN J X, et al. A thermo-viscoelastic model of process-induced residual stresses in composite structures with considering thermal dependence[J]. Composite Structures, 2016, 136: 34-43.
[5] 王乾, 关志东, 蒋婷, 等. 纤维体积含量和富树脂对复合材料V型结构固化变形的影响[J]. 复合材料学报, 2018, 35(3): 580-590.
[6] LI J, YAO X F, LIU Y H, et al. Thermo-viscoelastic analysis of the integrated T-shaped composite structures[J]. Composites Science and Technology, 2010, 70: 1497-1503.
[7] KIM Y K, WHITE S R. Viscoelastic analysis of processing-induced residual stress in thick composite laminates[J]. Mechanics of Composite Materials and Structures, 1997(4): 361-387.
[8] PARK S H, PARK T S, HAN K G. Real-time monitoring of composite wind turbine bladesusing fiber Bragg grating sensors[J]. Advanced Composite Materials, 2011, 20: 39-51.
[9] 杨文涛, 蔡明, 严永军, 等. 基于电热防冰技术的风电叶片温度场有限元分析[J]. 玻璃钢/复合材料, 2019(2): 63-68.
[10] CHEUNG A, YU Y, POCHIRAJU K. Three-dimensional finite element simulation of curing of polymer composites[J]. Finite Elements in Analysis and Design, 2004, 40(8): 895-912.
[11] ZOBEIRY N, VAZIRI R, POURSARTIP A. Differential implementation of the viscoelastic response of a curing thermoset matrix for composites processing[J]. Journal of Engineering Materials and Technology, 2006, 128: 90-95.
[12] DING A X, LI S X, WANG J H, et al. A three-dimensional thermo-viscoelastic analysis of process-induced stress in composite laminates[J]. Composite Structures, 2015, 129: 60-69.
[13] WANG Q L, GAO L L, WANG X X, et al. Numerical analysis and fiber Bragg grating monitoring of thermocuring processes of carbon fiber/epoxy laminates[J]. Polymer Testing, 2017, 62: 287-294.
[14] KIM Y K, WHITE S R. Process-induced residual stress analysis of AS4/3501-6 composite material[J]. Mechanics of Composite Materials and Structures, 1998(5): 153-186.
[15] KRAVCHENKO O G, KRAVCHENKO S G, PIPES R B. Cure history dependence of residual deformation in a thermosetting laminate[J]. Composites Part A: Applied Science and Manufacturing, 2017, 99: 186-197.
[16] ÇLNAR K, ERSOY N. Effect of fibre wrinkling to the spring-in behaviour of L-shaped composite materials[J]. Composites Part A: Applied Science and Manufacturing, 2015, 69:105-114.