Compression vs Tension
Ntxhais thiab compression yog ob lub ntsiab lus sib tham hauv physics. Lub zog yog lub zog thaum compression yog qhov tshwm sim. Ob lub ntsiab lus no ua si qhov tseem ceeb hauv kev ua haujlwm xws li tshuab tshuab, tsheb engineering, tshuab hluav taws xob, khoom siv hluav taws xob, pendulums thiab ntau yam haujlwm. Nws yog ib qho tseem ceeb kom muaj kev nkag siab zoo hauv kev nro thiab compression thiaj li ua tau zoo hauv cov haujlwm no. Hauv tsab xov xwm no, peb yuav tham txog dab tsi compression thiab nro yog, lawv cov ntsiab lus, kev siv ntawm compression thiab nro, qhov zoo sib xws ntawm compression thiab nro thiab thaum kawg, qhov sib txawv ntawm compression thiab nro.
Tension
Tension txhais tau tias yog lub zog rub tawm los ntawm txoj hlua, hlua, saw lossis ib yam khoom zoo sib xws. Muaj ob hom hlua. Ib txoj hlua tsis hnyav yog ib txoj hlua uas tsis muaj qhov hnyav. Ib txoj hlua tiag tiag yog ib txoj hlua uas muaj qhov hnyav hnyav. Ob lub ntsiab lus no yog qhov tseem ceeb hauv kev piav txog qhov nro. Thaum ib qho khoom raug rub los ntawm ib txoj hlua, qhov nro tshwm sim ntawm txhua qhov chaw ntawm txoj hlua. Qhov no yog vim muaj kev cuam tshuam ntawm intermolecular. Cov kev sib txuas ntawm cov molecules ua raws li qhov me me, ua kom ob lub molecules sib cais. Thaum lub zog sim ncab txoj hlua, cov ntawv cog lus no tiv thaiv qhov deformation. Qhov no ua rau muaj kev sib npaug zog thoob plaws hauv txoj hlua. Tsuas yog ob qhov kawg ntawm txoj hlua muaj zog tsis sib npaug. Lub zog tsis sib npaug ntawm qhov kawg, thaum lub zog pib ua haujlwm, yog sib npaug los ntawm qhov pib quab yuam. Lub zog tsis sib npaug ntawm qhov khoom kawg ua rau ntawm qhov khoom. Hauv qhov kev nkag siab no, kev nro tuaj yeem suav hais tias yog ib txoj kev tawm dag zog. Yog tias txoj hlua muaj qhov hnyav, txoj hlua yuav tsis yog kab rov tav, yog li qhov hnyav ntawm txoj hlua yuav tsum muab ntxiv rau kev suav.
Compression yog txo qhov ntim ntawm cov pa roj, kua, lossis cov khoom vim yog sab nraud quab yuam ua rau nws. Lub compression nws tus kheej tsis yog ib qho zoo-txhais kom muaj nuj nqis. Nws tuaj yeem muab tau raws li qhov ntim ntawm qhov txo qis lossis feem pua ntawm qhov ntim ntawm qhov txo qis. Kev ntsuas ntau ntawm compression yog Young's modulus rau cov khib nyiab thiab qhov compressibility yam rau cov roj. Young's modulus yog qhov sib piv ntawm lub siab ntawm cov khoom (kev ntxhov siab), rau cov khoom siv. Txij li cov kab mob tsis muaj qhov dav, cov units ntawm Young's modulus yog sib npaug rau cov chav nyob ntawm qhov siab, uas yog Newton ib square meter. Rau cov pa roj, qhov compressibility yam txhais tau tias yog PV / RT, qhov twg P yog qhov siab, V yog qhov ntsuas ntim, R yog cov roj universal tas li, thiab T yog qhov kub hauv Kelvin.
Qhov txawv ntawm Compression thiab Tension yog dab tsi?
• Ntxoov yog ib txoj kev tawm dag zog; compression tuaj yeem siv los hloov lub zog raws li qhov siab hauv cov tshuab hydraulic, tab sis cov txheej txheem compressive tsis tshwm sim.
• Ntxoov yog ib qho quab yuam, qhov compression yog qhov tshwm sim. Tension tsuas siv tau rau hauv cov hlua khov, tab sis compression tuaj yeem siv rau txhua yam khoom siv.
• Thaum nro, lub zog ua rau ntawm qhov khoom ib txwm tawm sab nraud ntawm qhov khoom. Hauv compression, lub zog ua rau ntawm qhov khoom yog sab hauv rau cov khoom.
