Raws li kev sib kis mechanism, planetary iav yog dav siv nyob rau hauv ntau yam engineering kev coj ua, xws li iav reducer, crane, planetary iav reducer, thiab lwm yam. Rau planetary iav reducer, nws muaj peev xwm hloov lub kis mechanism ntawm tsau qag iav tsheb ciav hlau nyob rau hauv ntau rooj plaub. Vim hais tias cov txheej txheem ntawm cov iav kis tau tus mob yog kab sib cuag, lub sij hawm ntev meshing yuav ua rau iav tsis ua hauj lwm, yog li nws yog tsim nyog los simulate nws lub zog. Li Hongli et al. siv txoj kev tsis siv neeg meshing rau mesh lub planetary iav, thiab tau txais tias lub zog thiab qhov siab tshaj plaws yog linear. Wang Yanjun et al. kuj meshed lub planetary iav los ntawm txoj kev tsis siv neeg tiam, thiab simulated statics thiab modal simulation ntawm lub planetary iav. Hauv daim ntawv no, cov ntsiab lus tetrahedron thiab hexahedron feem ntau yog siv los faib cov mesh, thiab cov txiaj ntsig kawg raug tshuaj xyuas kom pom seb puas muaj lub zog muaj zog.

1 、 Cov qauv tsim thiab kev txheeb xyuas qhov tshwm sim

Peb-dimensional qauv ntawm planetary iav

Planetary iavyog tsim los ntawm lub nplhaib iav, lub hnub iav thiab cov iav planetary. Lub ntsiab tsis tau xaiv nyob rau hauv daim ntawv no yog: tus naj npawb ntawm cov hniav ntawm lub puab tsaig nplhaib yog 66, tus naj npawb ntawm cov hniav ntawm lub hnub iav yog 36, tus naj npawb ntawm cov hniav ntawm lub planetary iav yog 15, lub puab kab uas hla ntawm lub puab iav. lub nplhaib yog 150 hli, lub modulus yog 2 hli, lub kaum sab xis siab yog 20 °, tus hniav dav yog 20 hli, lub addendum qhov siab coefficient yog 1, lub backlash coefficient yog 0.25, thiab muaj peb planetary iav.

Static simulation tsom xam ntawm planetary iav

Txhais cov khoom siv: import peb-dimensional planetary iav system kos hauv UG software rau hauv ANSYS, thiab teeb tsa cov khoom siv, raws li qhia hauv Table 1 hauv qab no:

Meshing: Lub caij kawg mesh muab faib los ntawm tetrahedron thiab hexahedron, thiab qhov loj me ntawm lub caij yog 5 hli. Txij li thaumplanetary iav, lub hnub iav thiab lub nplhaib puab yog nyob rau hauv kev sib cuag thiab mesh, lub mesh ntawm kev sib cuag thiab mesh qhov chaw yog densified, thiab qhov loj yog 2 hli. Ua ntej, tetrahedral grids yog siv, raws li qhia nyob rau hauv daim duab 1. 105906 ntsiab thiab 177893 nodes yog generated nyob rau hauv tag nrho. Tom qab ntawd hexahedral daim phiaj raug saws, raws li qhia hauv daim duab 2, thiab 26957 hlwb thiab 140560 nodes yog tsim nyob rau hauv tag nrho.

Load daim ntawv thov thiab ciam teb tej yam kev mob: raws li cov yam ntxwv ua hauj lwm ntawm lub planetary iav nyob rau hauv lub reducer, lub hnub iav yog lub iav tsav, lub planetary iav yog lub iav tsav, thiab qhov kawg tso zis yog los ntawm lub planetary carrier. Kho lub nplhaib puab hauv ANSYS, thiab siv lub zog ntawm 500N ·m rau lub hnub iav, raws li pom hauv daim duab 3.

Tom qab ua tiav thiab kev txheeb xyuas qhov tshwm sim: Kev hloov pauv nephogram thiab qhov sib npaug ntawm kev ntxhov siab nephogram ntawm kev soj ntsuam zoo li qub tau los ntawm ob daim phiaj sib faib tau muab rau hauv qab no, thiab kev tshuaj xyuas sib piv yog ua. Los ntawm kev hloov pauv ntawm nephogram ntawm ob hom kab sib chaws, nws pom tias qhov siab tshaj plaws hloov pauv tshwm sim ntawm txoj haujlwm uas lub hnub iav tsis mesh nrog lub ntiaj teb iav, thiab qhov siab tshaj plaws kev ntxhov siab tshwm sim ntawm lub hauv paus ntawm lub iav mesh. Qhov siab tshaj plaws ntawm daim phiaj tetrahedral yog 378MPa, thiab qhov siab tshaj plaws ntawm daim phiaj hexahedral yog 412MPa. Txij li qhov kev txwv tsis pub dhau ntawm cov khoom siv yog 785MPa thiab qhov kev nyab xeeb yog 1.5, qhov kev cia siab yog 523MPa. Qhov siab tshaj plaws ntawm ob qho kev tshwm sim yog tsawg dua qhov kev ntxhov siab uas tau tso cai, thiab ob qho tib si ua tau raws li lub zog.

2. Cov lus xaus

Los ntawm lub finite caij simulation ntawm lub planetary iav, lub displacement deformation nephogram thiab sib npaug kev ntxhov siab nephogram ntawm lub iav system yog tau, los ntawm cov ntaub ntawv siab tshaj plaws thiab yam tsawg kawg nkaus thiab lawv tis nyob rau hauv lubplanetary iavqauv tuaj yeem pom. Qhov chaw ntawm qhov sib npaug siab tshaj plaws kuj yog qhov chaw uas cov hniav iav feem ntau yuav ua tsis tau, yog li kev saib xyuas tshwj xeeb yuav tsum tau them rau nws thaum tsim lossis tsim khoom. Los ntawm kev tsom xam ntawm tag nrho cov txheej txheem ntawm cov iav planetary, qhov yuam kev tshwm sim los ntawm kev tsom xam tsuas yog ib qho iav hniav yog kov yeej.