SITEC?
Fasteningelementsforvibrationandnoisedecoupling
SITEC?
2
Silence–aqualityfactor.
NVHdevelopment(NVH=Noise,Vibration,Harshness)isbecomingincreasinglyimportant.Itispresentinall
industrialsectorsfromwashingmachinestovehicles,aircraftsandwindturbines.
NVHstandsfor:
VIB
E,R
ISA
T
OI
NOS
NS
,HE
N
AH
RS
Thedevelopmentisaboutavoidingvibrationandisamongthequalitycharacteristicsofaproductwhicharemost
frequentlydirectlyobserved.
Excessivenoiseandvibrationcauseproblems.Theycanaffecttheperformanceofaproductnegativelyifitwears
outearlierasaresult,showsalessefficientperformanceor–inextremecases–hasashorterproductlifeduetoa
mechanicalfailure.
Letustakeacloserlookatthevibrationtechnologyincars,forexample.Inthatparticularfield,
therequirementsareexceptionallydiverse:Engine,body,runninggearandothercomponentsgeneratenoiseand
vibration.NVHengineeringisahighlycomplexfield.Todayselectrifieddrivetrainsleadtotheformationofnew,
changednoisecharacteristics.
Itisarealchallengef