1. Kev pov thawj ntawm lub cev lub hauv paus ntsiab lus ntawm cov qauv tseem ceeb
Txoj cai ntawm kev txuag Mass
Tag nrho cov qauv yog ua raws li lub cev ntawm m = ρ × V (mass = ntom × ntim)
Tus nqi ceev
Theoretical ceev ntawm ntshiab txhuas: 2,698 kg / m³ (20 ℃)
Qhov kwv yees tus nqi ntawm 2,700 kg / m³ yog tsim nyog rau kev lag luam suav (kev ua yuam kev <0.1%)
2. Kev txheeb xyuas qhov nruj ntawm cov qauv Geometric
2.1. Standard geometric volume formula
Square tube formula txwv:
Qhov no muaj tseeb thaum lub raj phab ntsa tuab yog sib xws thiab lub kaum sab xis yog lub kaum sab xis (qhov tseeb square raj muaj qhov hloov pauv, thiab qhov kev xav yuam kev yog li 1-3%)
3. Unit System Consistency Verification
Cross-unit xam qhov pheej hmoo ntawm kev tshawb nrhiav
4. Kev hloov kho kom haum rau engineering
4.1. Kev them nyiaj rau cov yam tsis zoo
4.2. Quantification ntawm kam rau ua
Thickness kam rau ua ± 10% → Nyhav sib txawv ± (8% ~ 12%) (thin-walled qhov chaw yog rhiab heev)
Kev daws: W tiag = W theoretical × (1 + Δt / t) ( Δt : thickness sib txawv)
5. Kev Xeem Xeem
Extreme Case Verification:
Qhov ntom ntom anomaly scenario
7xxx alloy (7075): Ntsuas qhov ceev 2.810 g / cm³ → Yog tias siv 2.7g / cm³ yuam kev, qhov yuam kev yog +4.1%.
Formula rooj
4t (A + B) - 4t² yog tus qauv engineering suav nrog suav los ntawm kev sib npaug ntawm thaj tsam ntawm ntu los ntawm phab ntsa tuab thiab tom qab ntawd txiav plaub fab.
Piv txwv kev suav:
1.6061 txhuas phaj(1000 × 500 × 10 mm, ntev 2 m): W = 1000 × 500 × 2 × 0.0027 = 27 kg
2.7075 cev(sab nraud txoj kab uas hla 50 hli, phab ntsa thickness 3 hli, ntev 1.5 m): W = [(50-3) × 3 × 3.1416 × 1.5] × 0.00283 ≈ 5.65 kg
3. Square tub40 × 40 × 2mm, ntev 3m): W = [2 × 2 × (40 + 40-4) × 3] × 0.0027 × 0.98 ≈ 2.42 kg
Pom zoo ua haujlwm
1. Xaiv qhov ceev → 2. Ntsuas qhov loj → 3. Xaiv qhov nyiaj them poob haujlwm → 4. Xam los ntawm cov qauv
Post lub sij hawm: Jun-17-2025
