基于多尺度广义自洽模型的耐火材料变温损伤研究  

Variable temperature damage of refractories based on multi-scale generalized self-consistent model

作　　者：田富成 王志刚[2,3] 刘昌明[2,3] Tian Fucheng;Wang Zhigang;Liu Changming(Collaborative Innovation Center for Advanced Steels,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;不详)

机构地区：[1]武汉科技大学高性能钢铁材料及其应用省部共建协同创新中心,湖北武汉430081 [2]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 [3]武汉科技大学机械自动化学院,湖北武汉430081

出　　处：《耐火材料》2023年第3期245-249,共5页Refractories

基　　金：国家自然科学基金资助项目(51505346)。

摘　　要：借助细观力学模型,以热压成型的玻璃-氧化铝球材料为研究对象,对由温度变化引起的两相间热膨胀不匹配造成的损伤进行了数值解析;针对该材料的重新加热-冷却全过程,提出了一种非线性损伤行为的模拟方法。研究表明,其模拟结果与试验吻合较好,材料的变温损伤程度受Δα绝对值和颗粒相体积分数的影响,Δα绝对值越大,颗粒相体积分数越高,材料变温损伤越严重。The damage caused by the mismatch of the thermal expansion between the particle phase and the matrix phase during the temperature change was numerically analyzed with the aid of the micromechanical model,and the hot pressed glass-spherical alumina material was used as the research object.A nonlinear damage behavior simulation method was proposed for the whole reheating-cooling process of the material.The simulation results are in good agreement with the experiments.The degree of the thermal damage of a material is influenced by the absolute value ofΔαand the volume fraction of the particle phase.The larger the absolute value ofΔαand the higher the volume fraction of the particle phase,the severer the thermal damage of the material.

关 键 词：自洽模型 细观力学模型 温度变化 损伤 热膨胀 数值解析 

分 类 号：TQ175[化学工程—硅酸盐工业]