Method for predicting tyre running noise

摘要

In a method for predicting a rolling noise B of a tire on a pavement, a real profile of the pavement is charted, at least one value of at least one descriptor of the pavement is determined based on the real profile, and use is made of a law for predicting rolling noise B of a tire. The law is of a type given by B=g(V1, . . . , Vn), where V1, . . . , Vn are values of descriptors D1, . . . , Dn of the pavement, where 1≦n≦2, where D1 is a characteristic number of indenters of the pavement, and where D2 is a characteristic dimension of the indenters of the pavement.

主权项

1. A pavement design method based on a prediction of a rolling noise B of a tyre on a roadway pavement, the method comprising steps of:
obtaining a measurement of a surface of the pavement, the measurement providing data of a real profile of the pavement; filtering the data of the real profile, using a computer, to extract pavement descriptors N and R, in which:
N is a value of a characteristic number of indenters per unit area of the pavement, andR is a value of a characteristic dimension of indenters of the pavement; calculating the prediction of the rolling noise B of the tyre, using the computer, by utilizing information extracted in the filtering step in a law given by:B=20⁢log[(RRo)15⁢(NoN)35⁢(CCo)k⁢(0.751-v2⁢EEo)15]+Bo, in which
C is a rolling speed of the tyre,E is a stiffness modulus of a rubber of the tyre,v is a Poisson's ratio of the rubber of the tyre,k is a value in an interval from 1.2 to 2, andRo, No, Co, Eo, and Bo are reference values; and utilizing the prediction of the rolling noise B of the tyre calculated in the calculating step to modify a process for manufacturing pavement.