Abstract:
The most difficult things in study of cutting noise are to determine the sound power respect to any cutting position and the noise contribution from one radiator to the total cutting noise. In this paper, based on Statistical Energy Analysis for non-conservatively coupled systems under correlative excitations, Power Input Analysis (PIA) method is developed to deal with such difficulties. The detail theory of PIA is given. The techniqes for evaluating or measuring the concerned parameters, as well as PIA modeling, are discussed, too. As an application of PIA, cutting noise generated in turning the inner wall of a cylindrical shell with 300 mm in diameter, 700 mm in length and 10 mm in thichness is studied. Results show that PIA is a powerful tool in the study of cutting noise from cutting systems with higher modal density, as well as in the study of the other coupled complicated systems under en her correlative or non-correlative excitations.