Abstract: A method for determining the excitation frequency of vibratory stress relief by employing a system for determining the excitation frequency of vibratory stress relief is disclosed, comprising the steps of: connecting the component to the system for determining excitation frequency of vibratory stress relief; selecting a group of preferred excitation frequency of the vibratory stress relief according to the results of numerical simulation; obtaining the reference voltage peak of the sinusoidal signal from the preferred excitation frequency, and transforming the sinusoidal signal into an excitation signal for vibratory stress relief treatment; converting the vibration signal of the component during vibratory stress relief treatment into voltage signal to obtain the actual voltage peak; comparing the actual voltage peak with the reference voltage peak, and selecting the frequency with the maximum difference of voltage peak as the excitation frequency for the vibratory stress relief treatment.

Abstract: A system for determining the excitation frequency of vibratory stress relief is disclosed, comprising a host computer system, an arbitrary waveform generation card, a driver, a vibration exciter, an acceleration sensor, a charge amplifier, a data acquisition card, and a support device. The vibration exciter is mounted on the surface of a component, and the component is supported by the elastic support device; the host computer system comprises a finite element numerical simulation module, a preferred excitation frequency determination module, a reference voltage peak setting module, an excitation signal synthesis module, a voltage signal acquisition module, a Fourier transform module, an actual voltage peak acquisition module, and a voltage peak difference storage module.

Abstract: A tester assembled by multiple sets of mechanisms for shear strength-scale effect of a rock joint includes a horizontal loading mechanism, a horizontal supporting and force-measuring mechanism and a sample installation and lifting table are mounted on a platform on the bottom of a frame, the horizontal loading mechanism and the horizontal supporting and force-measuring mechanism are respectively located on two sides of the sample installation and lifting table; rock joint sample is divided into an upper portion and a lower portion by a slit, the horizontal loading mechanism is configured to load the upper portion of the multi-scale rock joint sample, and the horizontal supporting and force-measuring mechanism is configured to support the lower portion of the multi-scale rock joint sample; a vertical loading mechanism is located above the multi-scale rock joint sample, and can be mounted on the frame in a manner of being movable up and down; and the horizontal loading mechanism comprises at least two tangentia

Abstract: A tester assembled by multiple sets of mechanisms for shear strength-scale effect of a rock joint includes a horizontal loading mechanism, a horizontal supporting and force-measuring mechanism and a sample installation and lifting table are mounted on a platform on the bottom of a frame, the horizontal loading mechanism and the horizontal supporting and force-measuring mechanism are respectively located on two sides of the sample installation and lifting table; rock joint sample is divided into an upper portion and a lower portion by a slit, the horizontal loading mechanism is configured to load the upper portion of the multi-scale rock joint sample, and the horizontal supporting and force-measuring mechanism is configured to support the lower portion of the multi-scale rock joint sample; a vertical loading mechanism is located above the multi-scale rock joint sample, and can be mounted on the frame in a manner of being movable up and down; and the horizontal loading mechanism comprises at least two tangentia