Finite Element Analysis ntawm Deep Drawing ntawm Rectangular Drawing Parts
Nyob rau hauv daim ntawv hlau sib sau ua, sib sib zog nqus nqus yog ib qho ntawm cov txheej txheem tseem ceeb. Cov khoom tsim los ntawm nws yog dav siv hauv electronics, tsheb, aerospace thiab lwm yam kev lag luam. Nws muaj cov yam ntxwv ntawm lub teeb yuag, zoo interchangeability thiab tus nqi qis. Vim tias cov txheej txheem tsim qauv tsim ib txwm nyob ntawm qhov kev paub dhau los ntawm tus tsim qauv, feem ntau yuav tsum tau kho thiab hloov cov txheej txheem tsis tu ncua, uas yog siv sijhawm ntev thiab siv zog ntau.Cov txheej txheem finite kuj tau siv dav hauv cov ntawv hlau. sib sib zog nqus kos raws li lub computer thiab cov lej simulation tshuab. Txawm li cas los xij, nws tseem nyuaj rau kev simulate qhov cuam tshuam ntawm cov khoom siv, geometry thiab ciam teb tsis yog linearity hauv cov ntawv hlau sib sib zog nqus. kuj loj. Yog li ntawd, nws yog qhov tseem ceeb ntawm theoretical thiab cov tswv yim tseem ceeb los kawm txog kev cuam tshuam ntawm cov txheej txheem ntawm cov txheej txheem tsim thiab nrhiav cov txheej txheem zoo tshaj plaws.
Raws li cov kev tshawb fawb saum toj no workpiece-rectangular kos duab ib feem thiab cov yam ntxwv ntawm nws tiag machining txheej txheem, ib tug finite caij xam cov qauv rau tsim kev tsom xam ntawm cov duab plaub yog tsim, thiab lub computer simulation ntawm lub machining thiab tsim cov txheej txheem ntawm qhov no yog paub los ntawm kev siv. ib tug general dynamic explicit xam algorithm. , uas zoo daws qhov teeb meem tsis tu ncua quasi-static hauv cov txheej txheem machining; Qhov cuam tshuam ntawm virtual ceev ntawm lub punch, qhov khoob khoob khoob khoob khoob, lub xeev kev sib txhuam, cov duab ntawm qhov tuag, tshwj xeeb tshaj yog lub vojvoog ntawm cov ces kaum ntawm convex thiab concave tuag ntawm cov duab thiab qhov tseeb ntawm cov duab plaub yog kawm. Cov kev cuam tshuam ntawm lub thawv-zoo li tus tau tham, thiab cov teeb meem ntawm kev tawg thiab wrinkling nyob rau hauv lub sib sib zog nqus daim duab ntawm lub thawv-zoo li tus seem tau tham.
Los ntawm kev ntsuam xyuas simulation, cov lus xaus hauv qab no tuaj yeem kos:
1. Cov txiaj ntsig kev soj ntsuam ntawm kev tsim cov duab txwv cov ntsiab lus qhia tau hais tias qhov compressive kev nyuaj siab ntawm plaub lub kaum sab xis ntawm lub kaum sab xis ntawm lub kaum sab xis yog qhov loj tshaj plaws; compressive kev nyuaj siab ntawm qhov chaw ntawm qhov ntev thiab luv sab yog qhov tsawg tshaj plaws;
Cov txiaj ntsig ntawm daim ntawv qhia huab ntawm cov thickness hloov pauv qhia tau hais tias: lub thickness ntawm lub billet ntawm qhov nkag ntawm qhov tuag nce mus txog 10 feem pua, uas yog qhov chaw txaus ntshai ntawm wrinkling.
2. Nyob rau hauv qee yam txheej txheem, kev xuas nrig ntaus nrawm, qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob.
3. Thaum lub thawv duab plaub yog sib sib zog nqus nqus, lub punch vojvoog thiab lub vojvoog tuag muaj kev cuam tshuam zoo rau qhov wrinkling ntawm daim ntawv hlau sib sau;
Thaum lub vojvoog ntawm qhov tuag fillet nce, qhov wrinkling tendency nce thaum lub sij hawm sib sib zog nqus nqus, thiab thaum lub vojvoog ntawm qhov tuag fillet txo, lub rupture tendency ntawm lub puab tsaig sidewall nce;
Thaum lub vojvoog ntawm lub punch fillet txo qis, plaub lub kaum sab xis hauv qab ntawm cov duab plaub yog qhov ua rau tawg. Raws li qhov kev sim ntawm daim ntawv no, lub vojvoog ntawm lub punch thiab lub vojvoog ntawm lub concave tuag yog ob qho tib si 6 hli zoo.
4. Cov duab plaub sib sib zog nqus thaum lub sij hawm sib sib zog nqus nqus, thaum lub kaum sab xis ntawm lub kaum sab xis ntawm lub kaum sab xis nce ntawm 6 hli mus rau 12 hli, qhov thinning tus nqi ntawm daim ntawv duab plaub txo qis tsis tu ncua, thiab nws tag nrho nyob rau hauv 20 feem pua ntawm kev nyab xeeb;
Nyob rau tib lub sij hawm, lub thickening tus nqi ntawm cov ntawv hlau nce ua ntej thiab ces txo. Thaum rc yog 6 hli, qhov thickening tus nqi yog nyob rau hauv qhov kev nyab xeeb margin ntawm 8.6 feem pua.
Cov saum toj no yog qhov kev tshuaj ntsuam coj los rau koj los ntawm Dongmo, Kuv vam tias nws yuav pab tau koj.
