运用文献[1]中的变形模型和应力计算结果,推导出了存在热残留应力时的拉伸和压缩弹性模量和屈服强度表达式,表达式与试验吻合很好.分析表明,纤维根区域的压缩残留应力造成弹性模量的不对称性,基体拉伸残留应力和纤维的压缩残留应力造成屈服强度的不对称性.
参考文献
| [1] | 连建设, 江中浩, 杨德庄, 等. 短纤维增强金属基复合材料的热残留应力及在拉伸和压缩载荷下的应力分布[J].复合材料学报,2000,17(1):46. |
| [2] | Arsenault R J, Taya M. Thermal residual stress in metal matrix composites [J].Acta metall, 1987, 35: 651. |
| [3] | Withers P J, Stobbs W M, Pedersen O B. The application of the Eshelby method of internal stress determination to short fiber metal matrix composites [J].Acta metall, 1989, 37: 3061. |
| [4] | Arsenault R J, Wu S B. The strength difference and Bauschinger effects in SiC-Al composites [J].Mater Sci Engng, 1987, A96: 77. |
| [5] | Povirk G L, Needleman A, Nutt S R. An analysis of residual stress and deformation and damage mechanisms in Al-SiC composites [J].Mater Sci Engng, 1991, A132: 31. |
| [6] | Levy A, Papaziam J M. Elastic plastic finite element analysis of short-fiber-reinforced SiC/Al composites: effects of thermal treatment [J]. Acta metall mater, 1991, 39: 2255. |
| [7] | Shi N, Wilner B, Arsenault R J. A FEM study of the plastic deformation process of whisker reinforced SiC/Al composites [J]. Acta metall mater, 1992, 40: 2841. |
| [8] | Dutta I, Sims J D, Seigenhaler D M. An analytical study of residual stress effects on uni-axial deformation [J]. Acta metall mater, 1993, 41: 885. |
| [9] | Shen Y L, Finot M, Needleman M, et al. Effective elastic response of two-phase composites [J]. Acta metall mater, 1994, 42: 77. |
| [10] | Daymond M R, Withers P J. Examination of tensile/compressive loading asymmetries in aluminum based metal matrix composites using finite element method [J]. Mater Sci Tech, 1995, 11: 228. |
| [11] | 江中浩,连建设, 董尚利,等. 短纤维增强金属基复合材料应力分布的弹性模量和屈服强度[J]. 复合材料学报,1999,16(4):101. |
| [12] | Nardone V C, Prewo K M. On the strength of short-fiber composites with variables fiber length and orientation [J].Scripta metall, 1986, 20: 43. |
| [13] | Levy A, Papazian J M. Tensile properties of short fiber-reinforced SiC/Al composites:Part II. finite element analysis [J].Metall Trans A, 1990, 21: 411. |
| [14] | McDanels D L. Analysis of stress-strain, fracture and ductility behavior of aluminum matrix composites containing discontinious silicon carbide reinforcement [J].Metall Trans, 1985, 16A: 1105. |
| [15] | Prangnell P B, Downes T, Stobbs W M, et al. The deformation of discontiniously initial reinforced MMCs-II: the initial yield behavior [J].Acta metall mater, 1994, 42: 3425. |
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