非均质细胞元随机分布对高温岩石介质中裂纹扩展影响的数值试验研究  

NUMERICAL TEST ON INFLUENCE OF MESOSCOPIC HETEROGENEITY ON CRACK PROPAGATION OF HIGH- TEMPERATURE ROCK SAMPLE

作　　者：康健[1] 赵明鹏[1] 赵阳升[2] 梁冰[1] 

机构地区：[1]辽宁工程技术大学力学与工程科学系,阜新123000 [2]太原理工大学采矿研究所,太原030024

出　　处：《岩石力学与工程学报》2004年第z2期4898-4901,共4页Chinese Journal of Rock Mechanics and Engineering

摘　　要：在平面应变模型下,以花岗岩为样本,采用随机介质固热耦合数学模型及有限元方法进行了高温岩石介质中裂纹扩展影响的数值试验研究。在指数分布、韦泊分布2种随机分布和温度的作用下,研究了材料非均质性对岩石介质中裂纹扩展的影响,并对岩石热破裂做了详细研究,揭示了概率分布形式、分布参数.时间与花岗岩样本的热破裂过程的变化规律。Random non-homogeneous solid-thermal-coupled mathematics model and FEM are used. In plane stain state, the influence of heterogeneity on crack propagation in granite is studied with thermal dilatability and thermal conduction of exponential distribution and Weibull distribution based on a lot of numerical experiments. The relationships among the type of the random distribution, distribution parameter, time and thermal cracking of granite samples are pointed out.

关 键 词：岩石力学 非均匀性 随机分布 热破裂 数值试验 

分 类 号：O343.6[理学—固体力学] O346.1[理学—力学]