基于界面相模型的耐火材料非线性力学行为模拟  

Simulation of the Nonlinear Mechanical Behavior of Refractory Materials Based on Interface Model

作　　者：钟诚[1] 王志刚[1] 刘昌明[1] 

机构地区：[1]武汉科技大学冶金装备及其控制教育部重点实验室,湖北武汉430081

出　　处：《材料科学与工程学报》2014年第2期268-271,共4页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(51075310);教育部新世纪人才支持计划资助项目(NCET-12-0715);中国博士后基金资助项目(2013M542072);教育部博士点专项基金资助项目(20114219110003)

摘　　要：耐火材料力学行为的非线性源自于其细观结构的变形和损伤。从细观力学入手,采用不完美界面颗粒填充复合材料的界面相模型,结合材料的损伤机理,通过逐步改变界面相的弹性模量和体积分数等物理参数来等效模拟材料在承载过程中的非线性力学行为。在镁碳质耐火材料的实验基础上,对材料在不同承载形式下的损伤演化过程进行模拟,利用数值计算的方法得出材料应力与应变的关系。研究结果表明,运用此方法对镁碳质耐火材料非线性力学行为的模拟结果与实验结果能较好地吻合。Nonlinear mechanical behavior of refractory materials stems from microstructure deformation and damage.An interface model of particlelled composites with imperfect interfacial bonds was proposed. Combined with the damage mechanism of refractories,the nonlinear mechanical behavior of the refractory materials under different loading condition was equivalently simulated by changing the physical status of interphase,such as elastic modulus and volume fraction.At last the stress-strain curve of the material was obtained based on the damage evolution experiment of magnesium carbon refractory materials under different loading condition.The results of simulation show that the proposed method can simulate the nonlinear mechanical behavior of magnesium carbon refractory materials.

关 键 词：耐火材料 细观损伤 界面相模型 损伤模拟 

分 类 号：TQ175.1[化学工程—硅酸盐工业]