PROGRESSIVE DAMAGE STUDY AND STRENGTH ANALYSIS OF CFRP BOLTED JOINTS

Abstract

Abstract: In order to obtain the dynamic damage process of CFRP bolted joints, the failure criterion and material degradation model of CFRP bolted joints under tension load are established by using progressive failure method. The finite element model of bolted joints is established in the explicit analysis module of Abaqus Explicit, and analyzed by using VUMAT subroutine. Five kinds of damage extension processes of CFRP single bolted joints under tension load are analyzed, and the influence of bolt-hole fit clearance on the strength of CFRP single bolted joints is analyzed. On this basis, the strength optimization scheme of CFRP multi-bolt connection structure is put forward. The results show that the finite element dynamic analysis based on progressive failure method can effectively simulate the damage propagation process of CFRP bolted joints. The strength of CFRP single bolted joints decreases with the increase of fit clearance, and the overall strength of CFRP multi-bolted joints is increased by 32.1% by setting appropriate fit clearance.

Key words: CFRP, bolted joints, progressive damage, clearance fit, strength analysis

CLC Number:

TB332

HUANG Yu-xiang, HUANG Xiang-yang, SONG Chun-sheng, SUN Cheng. PROGRESSIVE DAMAGE STUDY AND STRENGTH ANALYSIS OF CFRP BOLTED JOINTS[J]. Composites Science and Engineering, 2020, 0(3): 44-52.

References

[1] 赵美英. 复合材料机械连接失效分析及强度影响因素研究. 西安: 西北工业大学, 2006.
[2] 赵稼祥. 民用航空和先进复合材料. 高科技纤维与应用, 2007, 32(2): 6-10.
[3] Yun J H, Choi J H, Kweon J H. A study on the strength improvement of the multi-bolted joint. Composite Structures, 2014, 108(1): 409-416.
[4] 谢鸣九. 复合材料连接. 上海: 上海交通大学出版社, 2011.
[5] 张桂书. 飞机复合材料构件装配间隙补偿研究. 南京: 南京航空航天大学, 2015.
[6] 郑岩冰. 复合材料多钉连接结构钉载分配比例研究. 大连: 大连理工大学, 2017.
[7] 杨睿, 徐元铭, 左明. 基于ABAQUS复合材料双搭接钉载均匀化分析. 飞机设计, 2012, 32(5): 13-15.
[8] 寇剑锋, 徐绯, 张笑宇,等. 考虑装配间隙的双搭接螺栓连接剪切刚度的解析求解方法. 复合材料学报, 2018, 35(6): 1510-1517.
[9] 吕光全, 程小全, 张纪奎. 复合材料结构凸头多钉连接钉载分配研究进展. 航空制造技术, 2013, 426(6): 67-69.
[10] Faggiani A, Falzon B G. Predicting low-velocity impact damage on a stiffened composite panel. Composites Part A-Applied Science & Manufacturing, 2010, 41(6): 737-749.
[11] Donadon M V, Iannucci L, Falzon B G, et al. A progressive failure model for composite laminates subjected to low velocity impact damage. Computers & Structures, 2008, 86(11): 1232-1252.
[12] Chang F K, Chang K Y. A progressive damage model for laminated composites containing stress concentrations. Journal of composite materials, 1987, 21(9): 834-855.
[13] Mccarthy C T, Mccarthy M A, Lawlor V P. Progressive damage analysis of multi-bolt composite joints with variable bolt-hole clear-ances. Composites Part B Engineering, 2005, 36(4): 290-305.
[14] Riccio A. Effects of geometrical and material features on damage onset and propagation, in single-lap bolted composite joints under tensile load: Part Ⅰ-Experimental studies. Journal of Composite Materials, 2005, 39(23): 2071-2090.
[15] 齐威. ABAQUS 6.14超级学习手册. 北京: 人民邮电出版社, 2016.
[16] 赵丽滨, 徐吉峰. 先进复合材料连接结构分析方法. 北京: 北京航空航天大学出版社, 2015.
[17] 姜云鹏, 岳珠峰. 复合材料层合板螺栓连接失效的数值模拟. 复合材料学报, 2005(4): 177-182.