基于三维细观随机模型的耐火浇注料损伤  

Damage of refractory castables based on 3D mesoscopic stochastic model

作　　者：黄育飞 苏安[3] 杨鑫 张湲鹭 何志军[1,2] HUANG Yufei;SU An;YANG Xin;ZHANG Yuanlu;HE Zhijun(School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China;Key Laboratory of Green Low-Carbon and Intelligent Metallurgy Liaoning Province,Anshan 114051,Liaoning,China;Institute of Mathematics,Hechi University,Hechi 546300,Guangxi,China)

机构地区：[1]辽宁科技大学材料与冶金学院,辽宁鞍山114051 [2]辽宁省绿色低碳与智能冶金重点实验室,辽宁鞍山114051 [3]河池学院数理学院,广西河池546300

出　　处：《钢铁研究学报》2024年第10期1318-1325,共8页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(52374339,52104331);辽宁省“兴辽英才”计划资助项目(XLYC2002064)。

摘　　要：细观尺度的耐火浇注料损伤研究对揭示损伤演化过程与机制意义重大。借助计算机辅助技术,应用Matlab编译耐火浇注料三维随机模型随机生成程序,并结合Comsol Multiphysics建模工具,建立了符合耐火浇注料颗粒级配的三维细观随机模型,随后导入Abaqus,最大主应力准则作为裂纹开裂准则,研究了耐火浇注料损伤演化全过程。结果显示本模型可以捕捉到从微观到宏观不同尺度上的微裂纹扩展行为;耐火浇注料应用过程中微裂纹通常起始于基质部分的缺陷处,并在骨料周围45°位向方向快速扩展。基质间相邻裂纹尖端的应力分布与骨料的存在可影响裂纹的扩展路径,使其在骨料周围发生偏转,弯曲方向远离骨料颗粒,其结果与实际损伤破坏结果一致。The study of damage to refractory castables at the mesoscopic scale is significant for revealing damage′s evolution process and mechanisms.With the help of computer-aided technology,a 3D mesoscopic stochastic model program for refractory castables was meticulously crafted using Matlab,and a 3D mesoscopic stochastic model conforming to the particle size distribution of refractory castables was established in combination with the Comsol Multiphysics modeling.The model,subsequently,was transferred into Abaqus,and the maximum principal stress criterion was used as the crack initiation criterion to study the whole process of damage evolution of refractory castables.It is found that this model can capture the micro-crack propagation behavior across microscopic to mesoscopic scales.In the application process of refractory castables,microcracks usually start at the defects of the matrix part and expand rapidly in the 45°direction around the aggregate.The stress distribution at the tips of adjacent cracks between the matrix and the presence of aggregate can affect the propagation path of cracks,causing them to deflect around the aggregate and bend away from the aggregate particles.The result is consistent with the actual damage and failure results.

关 键 词：耐火浇注料 ABAQUS 随机模型 微裂纹 损伤 

分 类 号：TF715[冶金工程—钢铁冶金] TQ175[化学工程—硅酸盐工业]