Theorical and experimental model to correlate the misalignment and unbalance of a rotary machine with the vibroacustic behavior and the electric energy consumption in a stable state

Abstract

Rotary machines are often used in the industrial field and the most frequently failure occurs in the roll bearings. Vibration produced by the unbalance and misalignment are the main causes of rolling element failures. Other consequences of the vibrations are the increase of noise level and the electric energy consumption in the motor. These variables are used to monitor and diagnose the failure in the machine in order to prevent them not to be available. Through this article we propose a regression model which allows us to relate the unbalance and misalignment of a machine to the vibrations in the roll bearing, the noise level and the electric energy consumption. In addition to this we perform an experimental assembly to obtain the coefficient of the
model and then the regression analysis. The regression model proposed let us predict the energy –vibroacustic behavior of equipments exposed to fail using less technological resources than the numerical model disclosed so far, and both require experimental calibrations.