邵乐天,尧军平,胡启耀,黄凯鑫,孙众

• 1:南昌航空大学航空制造工程学院

摘要(Abstract)：

采用图像处理、识别技术和边缘提取技术,获取TiC/AZ91复合材料真实的颗粒形貌和分布,构建了含有不同颗粒形状、不同颗粒体积分数及分布的有限元数值计算模型。借助ABAQUS有限元软件研究拉伸过程中增强颗粒不同形状、体积分数和分布对TiC/AZ91复合材料应力分布影响,探讨材料失效行为的影响规律及机制。结果表明:与圆形颗粒相比,增强颗粒为正方形时,复合材料失效面积最大,失效最为严重;增强颗粒体积分数越大,复合材料更容易产生失效;颗粒团聚比颗粒均布增强效果差,颗粒团聚与颗粒均布的失效面积比值(y)和拉伸载荷(x)之间呈线性关系:y=-0.041x+6.54。

关键词(KeyWords)： 有限元模拟;镁基复合材料;失效

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51164027,51661024);; 江西省教育厅重点科技项目(GJJ14502)

作者(Author): 邵乐天,尧军平,胡启耀,黄凯鑫,孙众

DOI: 10.13289/j.issn.1009-6264.2018-0366

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