|
- 2017
三维碳/碳复合材料板件拉伸强度预报
|
Abstract:
针对三维碳/碳复合材料板件开孔敏感性问题进行了试验与有限元分析。建立了三维碳/碳复合材料代表体积单元(RVE)和完好板件、开孔板件的有限元模型,给出了宏观应力到细观应力的转换方法,并基于此方法,实现了完好板件、开孔板件拉伸破坏过程的数值模拟。进行了三维碳/碳复合材料完好板件和开孔板件的单向拉伸试验,模拟计算结果与试验结果吻合良好。分析了不同宽径比(WTDR)对开孔板件拉伸强度的影响,其中当宽径比达到6时,开孔板拉伸极限强度相比完好板下降11.5%,可以认为如果宽径比不低于6,开孔对板件拉伸极限强度影响较小。该结论可以为碳/碳复合材料开孔板件设计提供指导。 Experiments and finite element analysis were carried out for the problem of open hole sensitivity of 3D carbon/carbon composite material plates.Finite element models of the representative volume element (RVE),the intact plate and open-hole plates of 3D carbon/carbon composite were established.Transition method between macro level stress and meso level stress was given and numerical simulation on the tensile failure of the intact plate and open-hole plates was implemented based on this method.By uniaxial tensile tests of 3D carbon/carbon composite intact plates and open-hole plates,good agreement between numerical results and experiments was observed.In addition,the influence of width to diameter ratio (WTDR) on the tensile strength was analyzed.The results show that the tensile strength of open-hole plate decreases by 11.5% comparing with that of intact plate when the WTDR reaches 6.It can be considered that the open hole makes little influence on the tensile strength of plates if the WTDR is not less than 6.And the result of the investigation provides insight into the design of carbon/carbon composite open-hole plate.
[1] | BILISIK K. Multiaxis 3D woven preform and properties of multiaxis 3D woven and 3D orthogonal woven carbon/epoxy composites[J]. Journal of Reinforced Plastics and Compo-sites, 2010, 29(8):1173-1185. |
[2] | 余育苗, 王肖钧, 王志海, 等. 三维正交机织复合材料的力学性能研究[J]. 实验力学, 2008, 23(3):206-212. YU Y M, WANG X J, WANG Z H, et al. Experiment study of mechanical properties of 3D orthogonal woven composite[J]. Journal of Experimental Mechanics, 2008, 23(3):206-212(in Chinese). |
[3] | 许承海, 孟松鹤, 齐菲, 等. 三维机织碳/碳复合材料双轴压缩载荷下的力学行为[J]. 复合材料学报, 2012, 29(6):206-211. XU C H, MENG S H, QI F, et al. Mechanical behaviors of the three-dimensional woven carbon/carbon composite materials under biaxial compression[J]. Acta Materiae Compositae Sinica, 2012, 29(6):206-211(in Chinese). |
[4] | 郭兴峰. 纬纱接结的三维正交机织物结构[J]. 纺织学报, 2008, 29(1):62-65. GUO X F. 3-D orthogonal woven fabric structure with binding weft[J]. Journal of Textile Research, 2008, 29(1):62-65(in Chinese). |
[5] | KOERBER H, XAVIER J, CAMANHO P P, et al. High strain rate behavior of 5-harness-satin weave fabric carbon-epoxy composite under compression and combined compre-ssion-shear loading[J]. International Journal of Solids and Structures, 2015, 54:172-182. |
[6] | GREEN S D, MATVEEV M Y, LONG A C, et al. Mechanical modelling of 3D woven composites considering realistic unit cell geometry[J]. Composite Structures, 2014, 118(1):284-293. |
[7] | DAI S, CUNNINGHAM P R. Multi-scale damage modelling of 3D woven composites under uni-axial tension[J]. Composites Structures, 2016, 142:298-312. |
[8] | GUAN Z D, MU J W, SU F, et al. Pull-through mechanical behavior of composite fastener threads[J]. Applied Compo-site Materials, 2015, 22(3):251-267. |
[9] | 郑君, 温卫东, 崔海涛, 等. 2.5维机织结构复合材料的几何模型[J]. 复合材料学报, 2008, 25(2):143-148. ZHENG J, WEN W D, CUI H T, et al. Geometric model of 2.5 dimensional woven structures[J]. Acta Materiae Compositae Sinica, 2008, 25(2):143-148(in Chinese). |
[10] | SODEN P D, HINTON M J, KADDOUR A S. Lamina properties, lay-up configurations and loading conditions for a range of fibre-reinforced composite laminates[J]. Composites Science and Technology, 1998, 58(7):1011-1022. |
[11] | 陈绍杰, 高树理, 宋焕成, 等. 复合材料设计手册[M]. 北京:航空工业出版社, 1990:51-52. CHEN S J, GAO S L, SONG H C, et al. Composite design manual[M]. Beijing:Aviation Industry Press, 1990:51-52(in Chinese). |
[12] | 李星, 关志东, 刘璐, 等. 基于应变不变量失效理论的复合材料损伤模拟[J]. 北京航空航天大学学报, 2013, 39(2):190-195. LI X, GUAN Z D, LIU L, et al. Damage simulation of composite materials based on strain invariant failure theory[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(2):190-195(in Chinese). |
[13] | ASTM D5766/D5766M-11. Standard test method for open-hole tensile strength of polymer matrix composite laminates[S]. Philadelphia:American Society for Testing and Mate-rials, 2007. |
[14] | CHEN X, TAYLOR L W, TSAI L J. An overview on fabrication of three-dimensional woven textile preforms for composites[J]. Textile Research Journal, 2011, 81(9):932-944. |
[15] | 董伟锋, 肖军, 李勇, 等. 2.5维编织复合材料弹性性能的理论研究[J]. 南京航空航天大学学报, 2005, 37(5):659-663. DONG W F, XIAO J, LI Y, et al. Theoretical study on elastic properties of 2.5D braided composites[J]. Journal of Nanjing University of Aeronautics and Astronautics, 2005, 37(5):659-663(in Chinese). |
[16] | 阚晋. 碳/碳复合材料微细观结构的表征及对有效性能的影响研究[D]. 哈尔滨:哈尔滨工业大学, 2010. KAN J. Investigation on characterization of micro and meso structures and their influence on effective properties of carbon/carbon composites[D]. Harbin:Harbin Institute of Technology, 2010(in Chinese). |
[17] | MU J W, GUAN Z D, BIAN T Y, et al. The experiment and numerical simulation of composite countersunk-head fasteners pull-through mechanical behavior[J]. Applied Composite Materials, 2014, 21(5):773-787. |
[18] | 曹海建, 钱坤, 盛东晓. 2.5维机织复合材料的几何结构模型与验证[J]. 纺织学报, 2009, 30(5):58-62. CAO H J, QIAN K, SHENG D X. Geometry model and experimental verification of 2.5-D woven composites[J]. Journal of Textile Research, 2009, 30(5):58-62(in Chinese). |
[19] | 边天涯, 关志东, 刘发齐, 等. 含孔隙缎纹编织复合材料面内压缩弹性性能预报[J]. 北京航空航天大学学报, 2016, 42(5):1016-1024. BIAN T Y, GUAN Z D, LIU F Q, et al. Prediction on in-plane compression elastic properties of satin weave composites with pore matrix[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(5):1016-1024(in Chinese). |