基体性能对复合材料热残余应力的影响*

doi:10.11901/1005.3093.2015.162

材料研究学报

2016, Vol. 30

Issue (7): 503-508 DOI: 10.11901/1005.3093.2015.162

本期目录 | 过刊浏览

基体性能对复合材料热残余应力的影响*

娄菊红^1,²(

), 杨延清²

1. 太原工业学院机械工程系太原 0300082. 西北工业大学材料学院西安 710072

Effect of Matrix Properties on Thermal Residual Stress of Fiber Reinforced Ti-matrix Composities

LOU Juhong^1,^2,^*(

), YANG Yanqing²

1. department of Mechanical engineering, Taiyuan Institute of Technology, Taiyuan 030008, China2. School of Materials, Northwestern Polytechnical University, Xi’an 710072, China

引用本文:

娄菊红, 杨延清. 基体性能对复合材料热残余应力的影响*[J]. 材料研究学报, 2016, 30(7): 503-508.
Juhong LOU, Yanqing YANG. Effect of Matrix Properties on Thermal Residual Stress of Fiber Reinforced Ti-matrix Composities[J]. Chinese Journal of Materials Research, 2016, 30(7): 503-508.

全文: PDF(1213 KB) HTML

摘要:

采用ANSYS有限元法建立三维模型, 研究了基体热膨胀系数和弹性模量对复合材料界面径向、轴向和周向残余应力大小和分布的影响。结果表明, 界面残余应力的改变量均与基体热膨胀系数的改变量成正比, 且随着基体热膨胀系数的减小界面周向残余应力沿着纤维周向分布的不均匀性减弱; 界面残余应力变化的总趋势是随着基体弹性模量的增大而增大, 但是增加的幅度不断减小。

关键词 ：复合材料, 热残余应力, 有限元法, 基体性能

Abstract：

The magnitude and distribution of the interfacial stresses along the radial-, axial- and circumferential directions at fiber side of fiber reinforced composites SiC_f / Ti-6Al-4V with the change of thermal expansion coefficient and elasticity modulus of the matrix are analysed by three-dimensional model established by using finite element method. The results show that the change of interfacial residual stress is proportional to that of thermal expansion coefficient of matrix, and the no-uniformity of distribution of the residual stress along the circumferential direction of fiber decreases with the decrease of thermal expansion coefficient. In addition, interfacial residual stress usually increases with the increase of elasticity modulus of matrix, but the increase of which reduces gradually.

Key words： composites thermal residual stress finite element method matrix properties

收稿日期: 2015-06-05

基金资助:* 国家自然科学基金51271147资助项目

作者简介: null

本文联系人: 娄菊红

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https://www.cjmr.org/CN/10.11901/1005.3093.2015.162 或 https://www.cjmr.org/CN/Y2016/V30/I7/503

表1 Ti-6Al-4V基体热膨胀系数的原始值及变化值(10-6/℃)

表2 Ti-6Al-4V基体弹性模量的原始值及变化值(GPa)

表3 国产SiC纤维的性能

图1 三种纤维排布方式的二维截面示意图(单位: mm)

图2 不同纤维排布方式的有限元模型

图3 不同基体热膨胀系数下纤维一侧界面残余应力的分布

图4 不同基体弹性模量下纤维一侧界面残余应力的分布

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