| 形状记忆合金短纤维增强弹塑性基体复合材料的力学行为 |
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| 引用本文： | 张臻,沈亚鹏,王健.形状记忆合金短纤维增强弹塑性基体复合材料的力学行为[J].复合材料学报,2004,21(6):173-178. |
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| 作者姓名： | 张臻 沈亚鹏 王健 |
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| 作者单位： | 西安交通大学,机械强度与振动国家重点实验室,西安,710049 |
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| 基金项目： | 国家自然科学基金(50135030) |
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| 摘 要： | 基于Eshelby等效夹杂方法和Mori-Tanaka的平均化理论推导了针对SMA短纤维增强弹塑性基体复合材料的细观力学模型。利用此模型,分析了这种复合材料的力学行为,讨论了材料温度、纤维体积分数和纤维特征形状等参数对复合材料残余应力和残余应变的影响。这对复合材料的分析和设计都有重要的意义。
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| 关 键 词： | 形状记忆合金 短纤维 复合材料 |
| 文章编号： | 1000-3851(2004)06-0173-06 |
| 收稿时间： | 2003-10-30 |
| 修稿时间： | 2004-01-13 |
MECHANICAL PROPERTIES OF SMA COMPOSITES EMBEDDED WITH ALIGNED SMA SHORT FIBER IN ELASTOPLASTIC MATRIX |
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| ZHANG Zhen,SHEN Yapeng,WANG Jian.MECHANICAL PROPERTIES OF SMA COMPOSITES EMBEDDED WITH ALIGNED SMA SHORT FIBER IN ELASTOPLASTIC MATRIX[J].Acta Materiae Compositae Sinica,2004,21(6):173-178. |
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| Authors: | ZHANG Zhen SHEN Yapeng WANG Jian |
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| Affiliation: | The State Key Laboratory of Mechanical and Vibration, Xi'an Jiaotong University, Xi'an 710049, China |
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| Abstract: | A micromechanical model was developed to study the mechanical behavior of a composite system consisting of aligned shape memory alloy (SMA) short fiber in elastoplastic matrix in the uniform thermal field. The analytical model was based on the Eshelby's equivalent inclusion method and the Mori-Tanaka scheme. The numerical example illustrates the mechanical response of SMA short fiber composite under isothermal longitudinal cycle loading. The effects of temperature, fiber volume fraction and fiber aspect ratio on the residual stress and residual strain of the composite were discussed, which is helpful to design the intelligent composites. |
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| Keywords: | shape memory alloy short fibers composites |
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