采用离散元法(DEM),用BPM(Bonded-particle model)模型分别建立并校准SiC陶瓷基体和碳纤维离散元模型,采用位移软化接触模型表征层间和纤维/基体之间的界面元损伤双线性本构关系.通过DCB试验(Double cantilever beam virtual test)和微滴脱黏试验分别对其界面强度进行收敛试验,动态地观察了塑性变形、裂纹扩展及界面脱黏过程.结果表明,位移软化接触模型可以很好地表征界面损伤过程,采用离散元法可以很好地动态模拟较复杂复合材料的损坏过程.
参考文献
[1] | 张立同,成来飞.连续纤维增韧陶瓷基复合材料可持续发展战略探讨[J].复合材料学报,2007(02):1-6. |
[2] | 李建章,张立同,成来飞,徐永东,李斗星.纤维增韧碳化硅陶瓷基复合材料的界面区研究[J].稀有金属材料与工程,2007(09):1539-1544. |
[3] | 郝元恺;肖加余.高性能复合材料学[M].北京:化学工业出版社,2004:14. |
[4] | Zhang, B.;Yang, Z.;Sun, X.;Tang, Z. .A virtual experimental approach to estimate composite mechanical properties: Modeling with an explicit finite element method[J].Computational Materials Science,2010(3):645-651. |
[5] | Dian-sen Li;Dai-ning Fang;Zi-xing Lu;Zhen-yu Yang;Nan Jiang .Finite Element Analysis of Mechanical Properties of 3D Four-directional Rectangular Braided Composites-Part 2: Validation of the 3D Finite Element Model[J].Applied composite materials,2010(4):389-404. |
[6] | Cundall P A;Strack O D L .A discrete numerical model for granular assemblies[J].Geotechnique,1979,29(01):47. |
[7] | P. Pizette;C.L Martin;G. Delette .Compaction of aggregated ceramic powders: From contact laws to fracture and yield surfaces[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2010(2):240-250. |
[8] | Yuanqiang Tan;Dongmin Yang;Yong Sheng .Discrete element method (DEM) modeling of fracture and damage in the machining process of polycrystalline SiC[J].Journal of the European Ceramic Society,2009(6):1029-1037. |
[9] | D.O. Potyondy;P.A. Cundall .A bonded-particle model for rock[J].International journal of rock mechanics and mining sciences,2004(8):1329-1364. |
[10] | David O. Potyondy .Simulating stress corrosion with a bonded-particle model for rock[J].International journal of rock mechanics and mining sciences,2007(5):677-691. |
[11] | Kim, H;Buttlar, WG .Discrete fracture modeling of asphalt concrete[J].International Journal of Solids and Structures,2009(13):2593-2604. |
[12] | V.T. Tran;F.-V. Donze;P. Marin .A discrete element model of concrete under high triaxial loading[J].Cement & concrete composites,2011(9):936-948. |
[13] | Itasca Consulting Group Inc.PFC 2D (Particle Flow Code in 2-Dimen-sions) Manual (Version 3.10)[M].Minneapolis:Itasca Consulting Group Inc,2002 |
[14] | 姜胜强,谭援强,李才,杨冬民.单晶硅力学性能及尺寸效应的离散元模拟[J].中国机械工程,2010(05):589-594. |
[15] | 姜胜强,谭援强,杨冬民,盛勇.碳化硅单点金刚石超精密切削加工残余应力的离散元模拟[J].硅酸盐学报,2010(05):918-923,930. |
[16] | Oya N;Johnson DJ .Direct measurement of longitudinal compressive strength in carbon fibres[J].Carbon: An International Journal Sponsored by the American Carbon Society,1999(10):1539-1544. |
[17] | 朱炜垚,许希武.复合材料层合板低速冲击损伤的有限元模拟[J].复合材料学报,2010(06):200-207. |
[18] | Zhenyu Ouyang;Guoqiang Li .Local Damage Evolution of Double Cantilever Beam Specimens During Crack Initiation Process: A Natural Boundary Condition Based Method[J].Journal of Applied Mechanics,2009(5):051003-1-051003-8. |
[19] | Yoshihara H;Satoh A .Shear and crack tip deformation correction for the double cantilever beam and three-point endnotched flexure specimens for mode Ⅰ and mode Ⅱ fracture toughness measurement of wood[J].Engineering Fracture Mechanics,2009,76(03):335. |
[20] | Zinck P;Wagner H D et al.Are microcomposites realistic models of the fiber/matrix interface? Ⅰ.Micromechanical modeling[J].Polymer,2001,42(12):5401. |
[21] | Nishikawa, M;Okabe, T;Hemmi, K;Takeda, N .Micromechanical modeling of the microbond test to quantify the interfacial properties of fiber-reinforced composites[J].International Journal of Solids and Structures,2008(14/15):4098-4113. |
[22] | Yang, D.;Sheng, Y.;Ye, J.;Tan, Y. .Discrete element modeling of the microbond test of fiber reinforced composite[J].Computational Materials Science,2010(2):253-259. |
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