System for Determining Excitation Frequency of Vibratory Stress Relief and Method therefor

摘要

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. The method for determining the vibratory stress relief frequency comprises the following steps: numerical simulating; determining the preferred excitation frequency; synthesizing the excitation signal; Fourier transforming; determining the excitation frequency for the vibratory stress relief treatment from the preferred excitation frequency. The present invention is advantageous in that it is capable of determining the vibratory stress relief excitation frequency based on the surface residual stress distribution state of the component.