Dynamic Mechanical Analysis (DMA) nthuav tawm ob qhov tseem ceeb: kev cia khoom (cov lus teb elastic) thiab kev poob modulus (damping peev xwm). Ob leeg sib txawv nrog ntau zaus, qhov kub thiab txias amplitude, tsim kom muaj qhov sib txawv ntawm qhov tsis pom ntawm qhov ntsuas durometer.
Tsib Yam Tseem Ceeb Tom Qab Kev Ua Haujlwm Divergence
1. Zaus-Nyob nruj
Roj hmab stiffens ho ntawm ntau zaus vim hais tias cov saw hlau molecular tsis tuaj yeem rov kho sai txaus. Ib feem nrog 600 N / mm static stiffness tuaj yeem ua 40-60% stiffer ntawm 50 Hz. Cov nyhuv stiffening no txawv ntawm cov ntaub ntawv txawm tias zoo tib yam hardness, nyob ntawm seb cov qauv molecular thiab formulation.
2. Kub rhiab heev
Kub variations dramatically cuam tshuam dynamic zog. Cov kev tshawb fawb pom tias cov roj hmab ntuj nrog 60 Shore A hardness nthuav tawm ob qho tib si khaws cia ntau dua thiab qhov poob siab dua piv rau cov ntaub ntawv softer ntawm 31℃-tab sis cov kev sib raug zoo no hloov pauv tsis tau.
3. Cov nyhuv Payne
Cov roj hmab uas muaj roj puv ua rau muaj kev ua kom muag muag zoo heev vim tias qhov kev sib tw loj nce ntxiv -cov nyhuv Payne. Cov℃ntawm softening sib txawv heev ntawm cov tebchaw nrog zoo tib yam static hardness, nyob ntawm seb hom muab tub lim thiab loading. Cheebtsam tej zaum yuav coj txawv txawv nyob rau hauv loj - amplitude vibrations txawm ntsuas tib durometer tus nqi.
4. Vulcanization State Variability
Hauv qab -vulcanized, zoo vulcanized, thiab tshaj -vulcanized roj hmab tuaj yeem ua tau zoo ib yam li qub hardness thaum nthuav tawm cov khoom muaj zog sib txawv. Hauv qab - cov ntaub ntawv vulcanized ua kom muaj cua sov ntau dua thiab muaj hnub nyoog sai dua, thaum dhau - cov khoom vulcanized dhau los ua nruj thiab nkig.
5. Geometric Factors
Cheebtsam geometry tsim ntxiv kev ua tau zoo divergence. Cov duab sib txawv muaj kev sib txawv ntawm kev ntxhov siab thaum lub sij hawm thauj khoom dynamic, cuam tshuam rau lub neej qaug zog thiab kav ntev. Ob qhov chaw nrog cov khoom zoo ib yam tuaj yeem muaj kev pabcuam ntau yam nyob ntawm lawv tus qauv tsim.
Tiag -Kev cuam tshuam rau ntiaj teb
Qhov kev sib txawv ntawm qhov kev ua tau zoo no muaj qhov cuam tshuam loj hauv ntau qhov kev lag luam:
Automotive:Suspension Cheebtsam ntsib cov kev qhia tshwj xeeb zoo li qub tuaj yeem xa cov suab sib txawv thiab kev co, cuam tshuam rau kev caij tsheb thiab kev txaus siab rau cov neeg siv khoom.
Aerospace:Vibration isolators nrog cov kev ntsuas zoo ib yam tuaj yeem tiv thaiv cov cuab yeej rhiab thaum lub sijhawm tso tawm lossis ua haujlwm
Muaj Machinery:Conveyor siv thiab mounts tuaj yeem hnav ntawm tus nqi sib txawv txawm tias ua tau raws li cov lus qhia tib yam, ua rau lub sijhawm tsis tau npaj tseg
Txoj Kev Forward
Txhawm rau kom ntseeg tau tias kev ua tau zoo, cov thawj coj hauv kev lag luam tau txav mus dhau qhov kev sim hardness yooj yim kom ua tiav cov yam ntxwv zoo:
- Kev xeem cheb zaus thoob plaws cov kev pabcuam- muaj feem cuam tshuam
- Kev ntsuas kub cheb los txheeb xyuas qhov kev hloov pauv tseem ceeb
- Amplitude cheb xeem kom nkag siab txog kev mob - nyob ntawm tus cwj pwm
- Ntau-axis kuaj nyob rau hauv qhov tseeb loading tej yam kev mob
- Ntev- lub sij hawm durability test los kwv yees lub neej kev pab
Xaus
Raws li kev lag luam xav tau ntau dua kev ntseeg siab thiab kev ua tau zoo, kev ua kom zoo tshaj plaws yog qhov tseem ceeb -tsis xaiv tau- kom ntseeg tau cov khoom zoo thiab cov neeg siv khoom txaus siab thoob plaws txhua daim ntawv thov. Engineers thiab designers yuav tsum saib tshaj qhov yooj yim hardness ntsuam xyuas kom to taub yuav ua li cas roj hmab Cheebtsam yuav coj tiag tiag coj nyob rau hauv kev pab cuam.
