Cov txheej txheem:

Ob yam dab tsi cuam tshuam rau kev sib txhuam?
Ob yam dab tsi cuam tshuam rau kev sib txhuam?

Video: Ob yam dab tsi cuam tshuam rau kev sib txhuam?

Video: Ob yam dab tsi cuam tshuam rau kev sib txhuam?
Video: Ua Dab Tsi Txhaum Koj - David Yang (New Song 2021) 2024, Kaum ib hlis
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Muaj ob lub ntsiab yam uas yuav cawv tus nqi tag nrho ntawm kev sib txhuam : 1) roughness ntawm qhov chaw (los yog "coefficient ntawm kev sib txhuam ") thiab 2) lub zog nruab nrab ntawm cov ob khoom. Hauv qhov piv txwv no, qhov hnyav ntawm cov khoom ua ke nrog lub kaum sab xis ntawm lub tais yuav hloov lub zog ntawm qhov ob khoom.

Kuj paub, yam twg cuam tshuam rau kev sib txhuam?

Cov Lus Teb Cov Tub Kawm Ntawv

  • Nto rau qhov khoom txav los yog qhov chaw ntawm qhov chaw. i.e., ntxhib nto, du nto, kua thiab lwm yam.
  • Qhov hnyav ntawm qhov khoom lossis tus nqi zog ntawm qhov chaw los ntawm qhov khoom.

Tsis tas li ntawd, dab tsi yog qhov cuam tshuam rau kev sib txhuam chav kawm 8? Qhov xwm ntawm qhov chaw (smoothness lossis roughness) cuam tshuam tus kev sib txhuam . Cov npoo du muaj qhov tsis sib xws tsawg dua. Qhov tsawg dua qhov irregularities, qhov tsawg dua qhov nyiam xauv. Qhov tsawg dua qhov nyiam xauv nrog lwm yam khoom, qhov tsawg dua kev sib txhuam (uas yog nyiam tawm tsam kev tawm suab).

Qhov thib ob, dab tsi yog ob yam uas cuam tshuam rau lub zog ntawm kev sib txhuam?

Kev sib txhuam quab yuam nyob ntawm ob yam:

  • a) Cov ntaub ntawv uas muaj kev sib cuag. Ob yam khoom thiab qhov xwm ntawm lawv qhov chaw.
  • b) Lub zog thawb ob qhov chaw ua ke. Thawb cov npoo ua ke ua rau ntau qhov asperities tuaj ua ke thiab ua rau thaj tsam ntawm kev sib cuag.

Dab tsi cuam tshuam kev sib txhuam coefficient?

Qhov zoo tshaj plaws, lub coefficient ntawm kinetic kev sib txhuam tsuas yog nyob ntawm qhov chaw ntawm qhov chaw. Nws tsis nyob ntawm lwm yam yam , suav nrog cov txheeb ze ceev ntawm qhov chaw thiab thaj chaw ntawm kev sib cuag. Koj tshawb xyuas lub zog ntawm kev sib txhuam los ntawm kev kawm cov khoom txav ntawm qhov ceev tsis tu ncua.

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