2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ib lub matrix ruaj khov yog suav tias yog qhov tseeb thiab qhov zoo. Qhov no txhais tau tias tag nrho cov eigenvalues yuav yog xoom lossis zoo. Yog li ntawd, yog tias peb tau txais qhov tsis zoo eigenvalue, nws txhais tau tias peb qhov tawv nqaij matrix tau ua tsis ruaj khov.
Tus nqi eigen puas yog qhov tsis zoo?
Geometrically, ib qho eigenvector, sib raug rau qhov tsis yog zero eigenvalue tiag tiag, cov ntsiab lus nyob rau hauv ib qho kev taw qhia uas nws yog stretched los ntawm kev hloov pauv thiab eigenvalue yog qhov tseem ceeb uas nws ncav cuag. Yog qhov eigenvalue tsis zoo, qhov kev taw qhia yog thim rov qab.
txhais li cas kom muaj qhov tsis zoo?
Cov lus tsis zoo eigenvalue yog tsim los ntawm cov txheej txheem kev daws teeb meem thaum lub system matrix raug decomposed. … SYSTEM YOG HAUJ LWM. Hauv lwm qhov xwm txheej, NEGATIVE EIGENVALUES txhais tau tias THAUM SYSTEM MATRIX tsis yog . POSITIVE DEFINITE: FOR EXAMPLE, BIFURCATION (BUCKLING) LOAD yuav tau dhau mus.
Ntau npaum li cas tsis zoo eigenvalue tuaj yeem muaj qhov matrix?
1) Thaum lub matrix tsis zoo meej, tag nrho cov eigenvalues yog qhov tsis zoo. 2) Thaum lub matrix tsis yog xoom thiab qhov tsis zoo ib nrab txhais tau tias nws yuav muaj tsawg kawg ib qho tsis zoo eigenvalue. 3) Thaum lub matrix yog tiag, muaj qhov txawv qhov txawv, thiab nws qhov kev txiav txim siab tsis zoo, nws yuav muaj tsawg kawg yog ib qho tsis zoo eigenvalue.
Dab tsi yog qhov tsis zoo eigenvalue hauv Abaqus?
ABAQUS tab tom siv cov kab daws teeb meem (tej zaum sib cais ncaj qha) uas tuaj yeem tsuasnrog rau qhov zoo meej systems ntawm equations. Cov lus ceeb toom tsis zoo eigenvalue qhia tias koj lub kaw lus tsis zoo meej yog li koj yuav tsis txwv qhov teeb meem kom raug thiab/lossis koj yuav muaj cov txheej txheem spurious hauv koj cov qauv.
Pom zoo:
Puas yog cov zaub mov tsis qab noj tsis zoo rau koj?
Puas yog cov zaub mov tsis qab noj tsis zoo rau koj? … Lo lus teb luv luv yog tias noj cov nqaij nyug siav thiab cais cov peas tej zaum tsis yog " phom sij," tshwj xeeb tshaj yog noj lawv ib zaug xwb, tab sis nws tuaj yeem ua rau qee qhov plab zom mov, nyob ntawm seb koj tus kheej li cas.
Puas yog nws tsis pom zoo lossis tsis pom zoo?
verb (siv nrog cov khoom), dis·app·proved, dis·ap·prov·ing. xav (ib yam dab tsi) tsis ncaj ncees lawm los yog reprehensible; censure los yog condemn nyob rau hauv lub tswv yim. kom tsis txhob pom zoo los ntawm; Tsis kam rau txim: Senate tsis pom zoo rau kev xaiv tsa.
Puas ua tsis tiav qhov kev sim tshuaj yog qhov tso tawm tsis zoo?
Kev tsis ua tiav tshuaj ntsuam yuav ua rau koj tso tawm tsis zoo. Yog tias kuv ua tsis tiav qhov kev sim tshuaj, kuv tus thawj coj yuav txiav txim siab kuv lub txim. Yog ib tug tub rog xeem tsis tau tshuaj, tus thawj coj ntawm lub tsev txiav txim siab txog qib kev rau txim.
Puas yog pov thawj uas tsis pom zoo lossis tsis pom zoo nrog kev sib cav?
Cov lus foob: Ib qho kev thov uas tsis pom zoo lossis tsis pom zoo nrog qhov thesis / thov. (Qhov no yuav yog tus neeg tawm tsam qhov kev xav.) Rebuttal: Cov pov thawj uas tsis pom zoo lossis tsis pom zoo rau qhov kev foob foob. (Nov yog qhov uas tus menyuam kawm ntawv teb rau tus yeeb ncuab thiab qhia tias vim li cas lawv qhov kev sib cav tsis muaj zog.
Qhov twg zoo dua tsis coj zoo lossis tsis ncaj ncees?
Cov lus no txhais li cas? "Impolite" yog ib lo lus uas txhais tau hais tias "tsis muaj tus cwj pwm zoo" lossis "rude": Nws tsis zoo los cuam tshuam thaum ib tus neeg hais lus. … Lo lus “tsis paub cai” muaj lub ntsiab lus ib yam nkaus.
