# Research on Electro-Hydraulic Servo Resonance Technology

## TL;DR

This paper introduces a new electro-hydraulic servo resonance technology for high-frequency sound fatigue testing of large-tonnage systems.

## Contribution

A novel electro-hydraulic servo resonant loading technology is proposed for high-frequency fatigue testing.

## Key findings

- The vibration equation and system characteristics were established and verified through simulation.
- Factors like stiffness and mass significantly influence the system's natural frequency and amplification coefficient.

## Abstract

In this paper, an electro-hydraulic servo resonance technology is proposed to meet the loading requirements of a high-frequency sound fatigue test for large tonnage. First of all, we analyze the static and dynamic loading structure of electro-hydraulic servo vibration and establish the vibration equation of the system. Additionally, the modal and vibration characteristics of the system are analyzed by simulation, which verified the feasibility of the proposed electro-hydraulic servo resonant loading technology. Finally, the influence of various factors such as sample stiffness, lead screw stiffness, class II spring stiffness, class II weight mass, lower beam mass, and upper beam mass on the natural frequency and amplification coefficient of the system is analyzed. In this paper, a new technology is proposed to provide theoretical support for the research and development of large-tonnage high-frequency noise fatigue testing equipment.