The modern NVH development requires a consequent up-front optimisation of all involved systems, subsystems and components. If no appropriate CAE tools are available to describe an NVH phenomenon in detail hybrid models based on measurements must be used. For the lower-frequency transmission of road/tyre noise to the passengers such a hybrid model can be created using Noise Path Analysis (NPA) techniques. The transfer matrix method for Noise Path Analysis calculates the excitation forces by inversion of the vibrational body transfer matrix. Bad or non-accessible chassis/body connections are teckled by using complementary points. Additional measuring locations on the body can reduce the influence of measurement errors and improve the quality of the force calculation. The applicability of this process is shown for raod/tyre noise transmission to the passengers.
Road/tyre noise development using noise path analysis techniques
Die Geräuschentwicklung beim Reifen-Straßenkontakt mittels Geräusch-Pfad Analysentechniken
ISMA, ISMA, Tools for Noise and Vibration Analysis, 19 ; 2 ; 899-910
1994
12 Seiten, 6 Bilder, 4 Quellen
Conference paper
English
Tyre/road noise : reference book
TIBKAT | 2002
|Tyre air cavity influence on tyre-road noise
Tema Archive | 2005
|Tyre-road noise - myths and realities
SLUB | 2001
|The Impact of the EU Tyre/Road Noise Directive on Tyre Development
British Library Conference Proceedings | 1995
|