Test analysis of blades vibration load and viration characteristics on the condition of rotor and stator rubbing

The blade load test method on the condition of rotor and stator rubbing was studied,the vibration characteristics of blade under rub-impact forces and friction forces were tested,and the time load and frequency spectrum of blade and casing under wallop were presented.This proves that,under different rub-impact forces,the blade doesn't generate sympathetic vibration,and is only subject to bending moment.All these provide a basis for intensity analysis of rotating machine on the condition of rotor and stator rubbing.