岩石损伤协同特征分析  

Analysis of the Synergetic Characteristics of Rock Damage

作　　者：于广明[1] 潘永战[1,2] 王国艳[1,3] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]河南科技大学建筑工程学院,河南洛阳471003 [3]辽宁工程技术大学力学与工程学院,辽宁阜新123000

出　　处：《山东科技大学学报（自然科学版）》2009年第4期5-8,共4页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：国家自然科学基金重点项目(50434020);国家自然科学基金项目(50874046、50804026);山东省自然科学基金重点项目(Z2007F10);教育部博士点基金项目(200804290002);青岛市科技计划项目(07-2-J-16-jch)

摘　　要：从系统的观点出发,采用热力学和协同学的基本理论和方法研究岩石受载条件下的损伤演化问题。应用协同学的绝热消去法得到了岩石考虑初始损伤条件下的非线性力学模型;研究岩石破坏过程中的相变问题,并加以深入分析,获得了岩石受载破坏过程中裂纹的平均取向规律,揭示了岩石破坏过程中的声发射现象和体征规律;初步建立了岩石协同破坏理论框架,并应用数值模拟验证了理论分析的正确性。From the viewpoint of system, the problem of damage evolving process of rocks under the condition of stress was studied by means of the basic theory and method of thermodynamics and synergetics. The nonlinear mechanical model of rock considering its original damage was obtained by employing the adiabatic elimination method of the synergeties. The phase transition in the damage process of rock was studied and its deep analysis was also made and the average orientation laws of rock in the damage process were gotten, revealing the phenomenon of acoustic emission and laws of signs in the process of rock failure. The theoretical framework of synergetic damage of rocks was set up. The correctness of the theoretical analysis is confirmed by numerical simulation.

关 键 词：岩石 损伤 协同 

分 类 号：TU452[建筑科学—岩土工程]