| 充分发挥NiTi纤维复合材料功能的一种方法 |
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| 引用本文： | 贺微波,刘罡,金明,赵永利. 充分发挥NiTi纤维复合材料功能的一种方法[J]. 功能材料, 2009, 40(5) |
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| 作者姓名： | 贺微波 刘罡 金明 赵永利 |
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| 作者单位： | 湖南工业大学,湖南,株洲,412008;北京交通大学,北京,100044;湖南省火电建设公司,湖南,株洲,412000;北京交通大学,北京,100044 |
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| 基金项目： | 国家自然科学基金资助项目(90205007) |
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| 摘 要： | 通常NiTi纤维圆柱体剪滞模型是通过界面传递应力,界面剪应力较大时,界面将产生脱粘.将两端有小垫片的NiTi纤维埋入基体中,构成一种新的NiTi纤维圆柱体剪滞模型,在一定的简化条件下,针对马氏体逆相变过程,对纤维轴应力、界面剪应力的分布及应力传递进行分析.分析结果表明,与通常模型比较,新模型可通过界面和小垫片传递应力,减小界面剪应力峰值,能充分发挥NiTi纤维的作动效应.此外还讨论了小垫片几何尺寸对应力分布及传递的影响.
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| 关 键 词： | NiTi纤维 逆相变 应力传递 应力分布 |
A method to bring into full play the functions of composites with prestrained NiTi fiber |
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| HE Wei-bo , LIU Gang , JIN Ming , ZHAO Yong-li. A method to bring into full play the functions of composites with prestrained NiTi fiber[J]. Journal of Functional Materials, 2009, 40(5) |
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| Authors: | HE Wei-bo LIU Gang JIN Ming ZHAO Yong-li |
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| Affiliation: | 1.Hunan University of Technology;Zhuzhou 412008;China;2.Hunan Provincial Thermal Power Construction Company;Zhuzhou 412000;3.Beijing Jiaotong University;Beijing 100044;China |
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| Abstract: | The stress transfer between the fiber and the matrix only depends on the interface in conventional cylinder model with a prestrained NiTi fiber,when the maximum interface shear stress is relatively high,interfacial debond would take place.In this paper,a prestrained NiTi fiber with a pad at it's ends is embedded to the matrix to construct a new cylinder model.During the reverse transformation,and under the simplicity conditions,the stress distributions of the NiTi fiber and the interface,and the stress tran... |
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| Keywords: | NiTi fiber reverse transformation stress transfer stress distribution |
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