含孔CFRP方管的仿真模型及孔参数优化

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (3): 13-18.

含孔CFRP方管的仿真模型及孔参数优化

刘强^1,2,何兆亨²,徐希宇³,陈锐祥²

1.湖南大学机械与运载工程学院,长沙410082;
2.中山大学工学院,广州510006;
3.广州汽车集团股份有限公司汽车工程研究院,广州511434

收稿日期:2017-09-08 出版日期:2018-03-20 发布日期:2018-03-20
作者简介:刘强(1981-),男,博士,副教授,主要从事轻量化复合材料汽车结构开发方面的研究,Liu5168198110@126.com。
基金资助:
国家自然科学基金(51675540);中国博士后科学基金(2015M582323);湖南省自然科学基金(2016JJ3039);广东省科技计划项目(2013B010402012)

SIMULATION TECHNOLOGY AND HOLE PARAMETERS OPTIMIZATION OF PERFORATED SQUARE CFRP TUBES

LIU Qiang^{1, 2}, HE Zhao-heng², XU Xi-yu³, CHEN Rui-xiang²

1.School of Mechanical Engineering, Hunan University, Changsha 410082, China;
2.School of Engineering, Sun Yat-sen University, Guangzhou 510006, China;
3.Guangzhou Automobile Group Co., Ltd., Automotive Engineering Institute, Guangzhou 511434, China

Received:2017-09-08 Online:2018-03-20 Published:2018-03-20

摘要/Abstract

摘要： 建立了含孔碳纤维增强复合材料(Carbon Fiber Reinforced Plastic,简称“CFRP”)管件的仿真模型,并对孔参数进行了多目标优化。首先研究建立了含孔CFRP管件的自由网格、映射网格和混合网格三种网格模型,对其计算效率和计算精度进行了比较,发现混合网格模型较适合于含孔结构仿真。其次建立了目标函数与孔参数之间的响应面模型,分析了孔径、孔横向位置参数、孔高度位置参数对响应的影响,发现孔径影响最大。最后采用多目标优化方法对含孔CFRP管件的孔参数进行了优化,当孔直径、孔中心高度比和孔横向偏移比三个设计变量分别取为8.98 mm、0.8、0.43时性能最优,比吸能和峰值力比初始模型分别提高了69.5%和3.6%。文中研究的仿真模型及孔参数优化方法对开展含孔复合材料结构设计具有指导意义。

关键词: 含孔, CFRP管, 孔参数, 多目标优化

Abstract: This paper aims to optimize the mechanical properties of perforated square CFRP tubes by finite element analysis. The failure mode, which cannot be observed in the experiment exactly, is analyzed by microscopic process. Mixed mesh for perforated tube, which considered as the best partitioning method, got a better computational efficiency and computational accuracy compared to free mesh and radial mesh. A response surface model of two objective functions and hole parameter was built and it is found that the radius of hole has the largest effect on the two responses. Finally, an optimum solution was obtained by multi-objective optimization, where the three design variables, the radius of the hole, height of the hole and the translation of the hole in cross range, are 8.98 mm, 0.80 and 0.43, respectively. And the improvement of 69.5% in SEA and a few sacrifices of 3.6% in peak load are achieved. The simulation model and optimization method in this paper are of guiding significance for designing CFRP perforated structured.

Key words: perforation, CFRP tubes, hole parameters, multi-objective optimization

中图分类号:

TB332

刘强,何兆亨,徐希宇,陈锐祥. 含孔CFRP方管的仿真模型及孔参数优化[J]. 玻璃钢/复合材料, 2018, 0(3): 13-18.

LIU Qiang, HE Zhao-heng, XU Xi-yu, CHEN Rui-xiang. SIMULATION TECHNOLOGY AND HOLE PARAMETERS OPTIMIZATION OF PERFORATED SQUARE CFRP TUBES[J]. Fiber Reinforced Plastics/Composites, 2018, 0(3): 13-18.

参考文献

[1] Jacob A. BMW counts on carbon fibre for its Megacity Vehicle[J] . Reinforced Plastics, 2010, 54(5): 38-41.
[2] 罗益锋. 高性能纤维在新一代汽车中的最新应用进展[J] . 纺织导报, 2014(11): 50-54.
[3] 李红明,王珂,韩纯强. 碰撞条件下碳纤维增强复合材料(CFRP)加固自升式平台桩腿的性能分析[J] . 振动与冲击, 2013, 32(4): 39-43.
[4] Ng S P, Lau K J, Tse P C. 3D finite element analysis of tensile notched strength of 2/2 twill weave fabric composites with drilled circular hole[J] . Composites Part B, 2000, 31(2): 113-132.
[5] Su Z C, Tay T E, Ridha M. Progressive damage modeling of open-hole composite laminates under compression[J] . Composite Structures, 2015, 122: 507-517.
[6] Wang J, Callus P J, Bannister M K. Experimental and numerical investigation of the tension and compression strength of un-notched and notched quasi-isotropic laminates[J] . Composite Structures, 2004, 64(3-4): 297-306.
[7] Wu X, Thorsson S I, Waas A M. Experimental and numerical study on cross-ply woven textile composite with notches and cracks[J] . Composite Structures, 2015, 132: 816-824.
[8] Karakuzu R, G Lem T, i Ten B M. Failure analysis of woven lami-nated glass-vinylester composites with pin-loaded hole[J] . Composite Structures, 2006, 72(1): 27-32.
[9] Cousigne O, Moncayo D, Coutellier D. Numerical modeling of nonlinearity, plasticity and damage in CFRP-woven composites for crash simulations[C] . Numerical modeling of nonlinearity, plasticity and damage in CFRP-woven composites for crash simulations. International Conference on Composite structures.
[10] 谢军伟, 刘维国, 詹国宁. 复合材料开孔层合板有限元网格划分方法研究[J] . 机械设计与制造, 2013(4): 228-231.
[11] Yang S, Qi C. Multiobjective optimization for empty and foam-filled square columns under oblique impact loading[J] . International Journal of Impact Engineering, 2013, 54: 177-191.
[12] Sun G, Li G, Hou S. Crashworthiness design for functionally graded foam-filled thin-walled structures[J] . Materials Science & Engineering A, 2010, 527(7-8): 1911-1919.
[13] 陈昌明, 于永志. 汽车侧面碰撞中车门内部缓冲泡沫刚度的匹配[J] . 山东交通学院学报, 2010, 18(1): 5-8.
[14] Liu Q, Mo Z, Wu Y. Crush response of CFRP square tube filled with aluminum honeycomb[J] . Composites Part B Engineering, 2016(98): 406-414.
[15] Liu Q, Ma J, He Z, et al. Energy absorption of bio-inspired multi-cell CFRP and aluminum square tubes[J] . Composites Part B: Engineering, 2017(121): 134-144.
[16] Liu Q, Ma J, Xu X, at al. Load bearing and failure characteristics of perforated square CFRP tubes under axial crushing[J] . Composite Structures, 2017(160): 23-35.