基于内聚力模型的颗粒增强耐火材料界面脱粘力学性能研究  

Research on Mechanical Behavior of Particle Reinforced Refractory Interface Debonding with Cohesive Zone Model

作　　者：王元仕 王志刚[1] 刘昌明[1] 

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

出　　处：《机械设计与制造》2016年第6期208-210,214,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51405353;51475340);教育部新世纪人才支持计划资助项目(NCET-12-0715);省部共建耐火材料与冶金国家重点实验室开放基金(G201406);湖北省自然科学基金(2014CFB825)

摘　　要：采用基于内聚力模型的Surface-based cohesive法对耐火材料界面相的力学行为进行模拟,仿真再现了耐火材料界面脱粘的整个过程。研究了受载形式、颗粒相形状以及分布方式对界面力学性能的影响。结果表明,界面脱粘可以分为界面承载、界面损伤和损伤扩展三个阶段。圆形颗粒情况下,界面损伤最先出现在垂直加载方向的界面两端附近,受拉时界面脱粘过程较快,且最大应力值大于受压状态;椭圆形颗粒情况下,界面损伤最先出现在长轴端部附近,脱粘所需时间稍长于圆形颗粒,且=45°倾斜的椭圆形颗粒界面上应力最小。Based on cohesive zone model,the Surface-based cohesive method was adopted to simulate the mechanical behavior of refractory interace.The simulation reappears the entire debonding process of refractory interface.The influence of loading form,the shape and distribution form of porticle phase on the mechanical properties of the interface were studied in detail.The results showed that the interfacial debonding can be divided into three stages：interface bearing stage,interface damage stage and damage propagation stage.Under the round particles case,interface damage first appeared near both ends of the vertical load direction.In the case of tersion,interfacial debonding process faster,and the maximum stress value was greater than the compressed state.Under the elliptical particles case,interface damage first appeared near the ends of the long axis.Debonding needed a little longer than round particles,and the stress value of interface was minimal when the elliptical particle was 45 degrees tilted.

关 键 词：内聚力模型 耐火材料 界面脱粘 力学性能 

分 类 号：TH16[机械工程—机械制造及自动化]