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本文将试验机-试样系统与相应的测量系统的频率响应问题联合加以考查,认为试样的荷载-位移全过程在试验机的任何加载情况下都是客观存在的.试验机与试样的刚度只是影响试样受载过程的位移速率.用自制的高频率响应的光电位移传感器取代应变式位移传感器的尝试表明,在普通试验机加载情况下,进行非位移控制的岩石荷载-位移全过程曲线的直接测试是可能的.
This paper examines the frequency response of the tester-specimen system and the corresponding measurement system. It is considered that the entire load-displacement process of the test specimen is objectively present under any loading conditions of the tester. The stiffness only affects the displacement rate of the specimen during loading. The attempt to replace the strain-type displacement sensor with a self-made high-frequency-response photoelectric displacement sensor shows that under normal loading conditions, the non-displacement controlled rock load-displacement process is performed. Direct testing of curves is possible.