运用基于能量的裂纹偏移准则,分别建立了两相和三相复合材料基体裂纹偏移/穿透的轴对称有限元模型,考察了纤维体积分数、描述材料特性弹性失配的Dundurs参数α和相对裂纹扩展长度ad/ap对相对能量释放率Gd/Gp的影响.将两相复合材料的有限元结果与He等人的结果进行对比,进一步考察了三相复合材料界面层厚度和Dundurs参数α1和α2对Gd/Gp的影响.分别将碳涂层SiC纤维增强复合材料SiC/C/Ti-6A1-4V和碳涂层陶瓷基增强复合材料SiC/C/SiC运用于有限元分析中,结果表明,所建立的模型能够准确地预测和比较基体裂纹偏移的机理.
参考文献
| [1] | Rebillat F,Lamon J,Guette A.The concept of a strong interface applied to SiC/SiC composites with a BN interphase[J].Acta Materialia,2000,48(18/19):4609-4618. |
| [2] | Gogotsi G A.Fracture toughness of ceramics and ceramic composites[J].Ceramics International,2003,29 (7):777-784. |
| [3] | Ahn B K,Curtin W A,Parthasarathy T A,et al.Criteria for crack deflection/penetration criteria for fiber-reinforced ceramic matrix composites[J].Composites Science and Technology,1998,58(11):1775-1784. |
| [4] | Kerans R J,Parthasarathy T A.Crack deflection in ceramic composites and fiber coating design criteria[J].Composites Part A:Applied Science and Manufacturing (Incorporating Composites and Composites Manufacturing),1999,30 (4):521-524. |
| [5] | He M Y,Evans A G,Hutchinson J W.Crack deflection at an interface between dissimilar elastic materials:role of residual stresses[J].International Journal of Solids and Structure,1994,31(24):3443-3455. |
| [6] | Martin E,Peters P W M,Leguillon D,et al.Conditions for matrix crack deflection at an interface in ceramic matrix composites[J].Materials Science and Engineering A,1998,250(2):291-302. |
| [7] | Mao R,Sun G.A study of the interaction between matrix crack and matrix-fibre interface[J].Engineering Fracture Mechanics,1995,51(3):469-477. |
| [8] | Carrère N,Martin E,Lamon J.The influence of the interphase and associated interfaces on the deflection of matrix cracks in ceramic matrix composites[J].Composites Part A:Applied Science and Manufacturing (Incorporating Composites and Composites Manu facturing),2000,31(11):1179-1190. |
| [9] | Kumar S,Singh R N.Effects of fiber coating properties on the crack deflection and penetration in fiber-reinforced ceramic composites[J].Acta Materialia,1997,45(11):4721-4731. |
| [10] | Dundurs J.Edge-bonded dissimilar orthogonal elastic wedges under normal and shear loading[J].Journal of Applied Mechanics,1969,36:650-652. |
| [11] | Zak A R,Williams M L.Crack point stress singularities at a bi-material interface[J].Journal of Applied Mechanics,1963,30:142-143. |
| [12] | Lacroix C,Leguillon D,Martin E.The influence of an interphase on the deflection of a matrix crack in a ceramic-matrix composite[J].Composites Science and Technology,2002,62(4):519-523. |
| [13] | Liu Y F,Tanaka Y,Masuda C.Debonding mechanisms in the presence of an interphase in composites[J].Acta Materialia,1998,46(15):5237-5247. |
| [14] | Ma J,Wang H Z,Weng L Q,et al.Effect of porous interlayers on crack deflection in ceramic laminates[J].Journal of the European Ceramic Society,2004,24(5):825-831. |
| [15] | Akser E O,Choy K L.Finite element analysis of the stress distribution in a thermally and transversely loaded Ti-6Al-4V/SiC fibre composite[J].Composites Part A:Applied Science and Manufacturing (Incorporating Composites and Composites Manufacturing),2001,32(2):243-251. |
| [16] | Hinoki T,Yang W,Nozawa T,et al.Improvement of mechanical properties of SiC/SiC composites by various surface treatments of fibers[J].Journal of Nuclear Materials,2001,289(1/2):23-29. |
| [17] | Wang Y Q,Zhou B L.Effect of a fiber coating on the fabrication of fiber reinforced metal-matrix composites[J].Journal of Materials Processing Technology,1998,73(1/3):78-81. |
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