Load mode control of test rigs for rubber-metal vibration isolators

Abstract

BACKGROUND: Confirmation of the effective performance of vibration isolators of the suspension system for cabins of wheeled and tracked vehicles is obtained on the basis of bench tests. The development of loading devices and load mode control systems for bench testing of vibration isolators based on operating modes is a relevant technical task.
 AIM: Development of load mode control systems for bench testing of vibration isolators based on the analysis of their operational loads.
 METHODS: Based on the analysis of the operational loads of vibration isolators of suspension systems for cabins of wheeled and tracked vehicles, technical solutions for loading devices of rigs and load mode control systems have been developed that make it possible to reproduce load modes with parameters statistically equivalent to operational load modes on the tested vibration isolators.
 RESULTS: The technical solution of the rig for durability testing of rubber-metal vibration isolators with reproduction of operational loads in the vertical, longitudinal and lateral directions on the tested vibration isolator is proposed. A technical solution for the rig ensuring reproduction of load modes at durability testing of vibration isolators, in which the dynamic component of the load contains forced and natural vibrations of the protected object, is also proposed. Load mode control of the proposed rigs ensures more reliable test results due to the approximation of the load conditions of vibration isolators on the rigs to the operational ones.
 CONCLUSION: The practical value of the study lies in the opportunity of using the proposed technical solutions of test rigs and load control systems for testing vibration isolators of the suspension system for cabins of wheeled and tracked vehicles with an increase in the degree of reliability of their results due to the approximation of load conditions to the operational ones.