基于多尺度广义自洽模型的耐火材料变温性能预测  

Prediction of variable temperature performance of refractory based on multi-scale generalized self-consistent model

作　　者：刘昌明[1,2,3] 李贤军 王东烁 熊琦 LIU Changming;LI Xianjun;WANG Dongshuo;XIONG Qi(State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China;Key Laboratory of Metallurgical Equipment and Control of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;College of Machinery and Automation,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学省部共建耐火材料与冶金国家重点实验室,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：《武汉科技大学学报》2025年第1期8-13,共6页Journal of Wuhan University of Science and Technology

基　　金：国家自然科学基金项目(51505346).

摘　　要：针对耐火材料在高温工况下弹性模量的复杂非线性变化,从两相热膨胀系数失配导致的材料失效理论入手,借助多尺度广义自洽模型,提出了一种利用耐火材料各组分的热弹性性能对其变温过程中的宏观非线性行为进行预测的方法。以热压成型的玻璃-球形氧化铝耐火材料为例,对其升温/降温过程中的弹性模量进行了预测。结果表明,预测值与实验数据基本相吻合,利用该方法预测两相耐火材料的热弹性性能能够得到较为精确的结果。In light of the complex nonlinear change of elastic modulus of refractory materials under high temperatures and starting from the material failure caused by the mismatch of two-phase thermal expansion coefficients,a method for predicting the macroscopic nonlinear behavior in the process of temperature change by using the thermoelastic properties of each component of refractory materials was proposed by means of multi-scale generalized self-consistent model.With the glass-spherical aluminum oxide refractory formed by hot pressing as an example,the elastic modulus in the process of heating/cooling was predicted.The results show that the predicted values are basically consistent with the experimental data.Using this method to predict the thermoelastic properties of two-phase refractories can yield more accurate results.

关 键 词：耐火材料 广义自洽模型 细观力学 变温性能 数值解析 

分 类 号：TQ175[化学工程—硅酸盐工业]