摘要
采用有限元方法分析了颗粒增强铁基复合材料强度和应力与颗粒形状、尺寸以及体积分数的关系。结果表明,颗粒尖锐化会导致颗粒尖端应力集中和基体内的应变集中。同时,颗粒长径比增大,颗粒的应力集中也增大;颗粒尺寸减小和体积分数增加都有助于提高复合材料的强度。
The finite element method is used to analyze the relationship between strength and stress of the particle reinforced iron matrix composites and the shapes,sizes and fraction volume of the particles.The results show that the acumination of the particle can result in stress concentration of the particle tip and strain concentration in the matrix.Meanwhile,the stress concentration increases with increasing in length-diameter ratio.The reduction of the particle size and the increase of the fraction volume are helpful to improving the strength of the composites.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2005年第4期254-256,共3页
Special Casting & Nonferrous Alloys
基金
河南科技大学基金项目 (2 0 0 1 0 1 )
关键词
铁基复合材料
有限元法
应力集中
应变集中
长径比
Particles Reinforced Iron Matrix Composites,Finite Element Method,Stress Concentration,Strain Concentration,Length-diameter Ratio