Consideration of uncertainties in the preliminary design case of an electromagnetic spindle

Abstract

Modeling and evaluation of uncertainties constitute indeed one of the key points when making any decision. For this, designers have to compare the measured or calculated value with a range of permissible values in order to obtain a guaranteed design process. Thus, in this work, simulation of the dynamic behavior of an electromagnetic spindle was done based on the interval computation technique. Indeed, the use of this technique makes it possible to obtain a set of values for different design parameters of the spindle and, consequently, to avoid making several simulations which could make the system useless, expensive or ineffective. The proposed model is based on the combination of Matlab with ModelCenter. Matlab was used to model and simulate the system and ModelCenter to perform parametric studies to verify the influences of uncertainty on the dynamic behavior of the electromagnetic spindle and to determine the optimal design parameters.

On the use of viscoelastic materials characterized by Bayesian inference in vibration control

“…In this characterization, one seeks to describe the dynamic properties of a viscoelastic material from models that contain such parameters and their associated uncertainties. According to Trabelsi et al (2019), when the uncertainties associated with some design parameters are inserted in the model, the designer has an idea of the effects of the variation of these parameters, in addition to assisting her/him in decision making about the most appropriate values in a preliminary concept of the product.…”