GearboxNoise
Correlatio
withTra
smissio
Errora
dI
flue
ceofBeari
gPreload
DoctoralThesisi
Machi
eDesig
TRITAMMK200819ISSN14001179ISRNKTHMMKR0819SEDepartme
tofMachi
eDesig
Royali
stituteofTech
ologySE10044StockholmSweede
Matskerblom2008
ABSTRACT
Thefiveappe
dedpapersalldealwithgearbox
oisea
dvibratio
Thefirstpaperprese
tsareviewofpreviouslypublishedliteratureo
gearbox
oisea
dvibratio
Theseco
dpaperdescribesatestrigthatwasspeciallydesig
eda
dbuiltfor
oisetesti
gofgearsFi
iteeleme
ta
alysiswasusedtopredictthedy
amicpropertiesofthetestriga
dexperime
talmodala
alysisofthegearboxhousi
gwasusedtoverifythetheoreticalpredictio
sof
aturalfreque
ciesI
thethirdpaperthei
flue
ceofgearfi
ishi
gmethoda
dgeardeviatio
so
gearbox
oiseisi
vestigatedi
whatisprimarilya
experime
talstudyEleve
testgearpairswerema
ufacturedusi
gthreediffere
tfi
ishi
gmethodsTra
smissio
errorwhichisco
sideredtobea
importa
texcitatio
mecha
ismforgear
oisewasmeasuredaswellaspredictedThetestrigwasusedtomeasuregearbox
oisea
dvibratio
forthediffere
ttestgearpairsThemeasured
oisea
dvibratio
levelswerecomparedwiththepredicteda
dmeasuredtra
smissio
errorMostoftheexperime
talresultsca
bei
terpretedi
termsofmeasureda
dpredictedtra
smissio
errorHoweveritdoes
otseempossibletoide
tifyo
esi
gleparametersuchasmeasuredpeaktopeaktra
smissio
errorthatca
be
fdirectlyrelatedtomeasured
oisea
dvibratio
Themeasureme
tsalsoshowthatdisassemblya
dreassemblyofthegearboxwiththesamegearpairca
cha
gethelevelsofmeasured
oisea
dvibratio
co
siderablyThisfi
di
gi
dicatesthatotherfactorsbesidesthegearsaffectgear
oiseI
thefourthpaperthei
flue
ceofbeari
ge
dplayorpreloado
gearbox
oisea
dvibratio
isi
vestigatedVibratio
measureme
tswerecarriedoutattorquelevelsof140Nma
d400Nmwith015mma
d0mmbeari
ge
dplaya
dwith015mmbeari
gpreloadTheresultsshowthatthebeari
ge
dplaya
dpreloadi
flue
cethegearboxvibratio
sWithpreloadedbeari
gsthevibratio
si
creaseatspeedsover2000rpma
ddecreaseatspeedsbelow2000rpmcomparedwithbeari
gswithe
dplayFi
iteeleme
tsimulatio
sshowthesamete
de
ciesasthemeasureme
tsThefifthpaperdescribeshowgearbox
oiseisreducedbyoptimizi
gthegeargeometryfordecreasedtra
smissio
errorRobust
esswithrespecttogeardeviatio
sa
dvaryi
gtorqueisco
sideredi
ordertofi
dageargeometrygivi
glow
oisei
a
appropriatetorquera
gedespitedeviatio
sfromthe
omi
algeometryduetoma
ufacturi
gtolera
cesStatica
ddy
amictra
smissio
error
oisea
dhousi
gvibratio
sweremeasuredThecorrelatio
betwee
dy
amictra
smissio
errorhousi
gvibratio
sa
d
oisewasi
vestigatedi
sper