Failure analysis of carbon fibre reinforced composite curved beams under bending load

doi:10.19936/j.cnki.2096-8000.20210928.011

Abstract

Abstract: Based on the continuous stiffness reduction scheme of composite materials and the three-dimensional Hashin failure criterion, the progressive damage analysis model of composite materials is established, and the user material subroutine (UMAT) corresponding to the model is compiled. The program is called by ABAQUS to simulate the four-point bending of carbon fiber reinforced composite curved beams. The simulation results are compared with the experimental results, and the effectiveness of the progressive damage analysis model is verified. The failure behavior of composite curved beams is analyzed. It is found that under bending load, the main failure modes of carbon fiber reinforced composite curved beams are tensile delamination failure and matrix tensile failure in the curved region. After the tensile delamination failure occurred, it expanded rapidly, the composite curved beam quickly lost the bearing capacity and finally failed. The main cause of delamination failure of the composite curved beam is the excessive interlaminar tensile stress.

Key words: composite material, curved beam, four-point bending, progressive damage

CLC Number:

TB332

DENG Zhong, YU Yin, LIU Long-quan, WANG Hai. Failure analysis of carbon fibre reinforced composite curved beams under bending load[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(9): 74-78.

References

[1] 宁莉, 杨绍昌, 冷悦, 等. 先进复合材料在飞机上的应用及其制造技术发展概述[J]. 复合材料科学与工程, 2020(5): 123-128.
[2] 严侃, 黄朋. 复合材料在海洋工程中的应用[J]. 玻璃钢/复合材料, 2017(12): 99-104.
[3] SHENOI R A, WANG W. Through-thickness stresses in curved composite laminates and sandwich beams[J]. Composites Science & Technology, 2001, 61(11): 1501-1512.
[4] FRATERNALI F, SPADEA S, ASCIONE L. Buckling behavior of curved composite beams with different elastic response in tension and compression[J]. Composite Structures, 2013, 100: 280-289.
[5] ARCA M A, COKER D. Experimental investigation of CNT effect on curved beam strength and interlaminar fracture toughness of CFRP laminates[J]. Journal of Physics Conference, 2014, 524: 012038.
[6] HAO W F, YUAN Y N, ZHU J G, et al. Effect of impact damage on the curved beam interlaminar strength of carbon/epoxy laminates[J]. Journal of Adhesion Science & Technology, 2016, 30(11): 1-12.
[7] WANG W, SHENOI R A. Delamination modelling of a curved composite beam subjected to an opening bending moment[J]. Journal of Strain Analysis for Engineering Design, 2003, 38(5): 453-457.
[8] GOZLUKU B, COKER D. Modeling of the dynamic delamination of L-shaped unidirectional laminated composites[J]. Composite Structures, 2012, 94(4): 1430-1442.
[9] MARA S, YAMAN M. Dynamic analysis of hybrid laminated composite curved beam[C]//3rd International Conference on Advanced Engineering Technologies. 2019.
[10] 黄豪杰, 张俊琪, 刘龙权, 等. 受载复合材料角片弯角区域应力分布特征分析[J]. 上海交通大学学报(自然版), 2014, 48(8): 1116-1121.
[11] 马丽婷, 陈新文, 王翔, 等. 碳纤维复合材料曲梁冲击后四点弯曲强度及损伤失效模式研究[J]. 玻璃钢/复合材料, 2017(3): 17-20.
[12] OLMEDO A, SANTIUSTE C. On the prediction of bolted single-lap composite joints[J]. Composite Structures, 2012, 94(6): 2110-2117.
[13] LINDE P, PLEITNER J, BOER H D, et al. Modelling and simulation of fibre metal laminates[C]//ABAQUS Users' Conference. 2004: 421.
[14] CHEN J, RAVEY E, HALLETT S, et al. Prediction of delamination in braided composite T-piece specimens[J]. Composites Science and Technology, 2009, 69(14): 2363-2367.
[15] Standard test method for measuring the curved beam strength of a fiber-reinforced polymer-matrix composite: ASTM D6415[S]. 2006.