用能量准则分析试验机-试样系统的稳定性  

ANALYSIS ON THE STABILITY OF TEST MACHINE AND ROCK SAMPLE SYSTEM

作　　者：曾亚武[1] 陶振宇[1] 邬爱清[2] 

机构地区：[1]武汉水利电力大学,武汉430072 [2]长江科学院岩基所,武汉430010

出　　处：《岩石力学与工程学报》2000年第z1期863-867,共5页Chinese Journal of Rock Mechanics and Engineering

摘　　要：采用经典稳定性理论中的能量准则 ,分析了试验机 -试样系统的稳定性 ,得出了获得试样的荷载 -位移全过程关系曲线的条件 ,认为试验机的刚度及加载条件对试验结果具有重要影响。进一步分析认为 ,在普通的压力机上 ,针对上述条件采取适当措施 ,也能获得试样的荷载 -位移全过程关系曲线。The energy criterion of classical stability theory is used to analyze the stability of test machine and rock sample system. The conditions to obtain the complete load deformation curves are given. The test results are affected by the stiffness of test machine and loading condition significantly. Furthermore, with the general test machine, the complete loading deformation curves could be obtained as soon as adopting some appropriated measures.

关 键 词：试验机-试样系统 稳定性 能量准则 刚度 加载方式 

分 类 号：TU[建筑科学] 458+．3