Lub zog ntawm steel springboard
Steel springboard yog ib yam tseem ceeb ntawm steel springboard, nyob rau hauv tus txheej txheem ntawm kev siv lub steel springboard kuj yuav tsum tau them sai sai mus rau ntau yam teeb meem, feem ntau hais lus, lub zog ntawm steel springboard kuj loj, ntau qhov chaw yog siv los ntawm lub zog. ntawm steel springboard, qhov tseeb, ua ntej siv steel springboard rau nws lub zog kuj yuav tsum tau tas li nqa tawm kom nkag siab. Lub zog ntawm cov hlau steel springboard tuaj yeem suav tau. Txoj kev suav suav yog dab tsi? Peb thiab steel springboard Hoobkas Xiaobian ua ke los xam nws:
Piv txwv tias lub zog tensile ntawm cov khoom yog σ, lub siab yog P, thiab sab nraud ntawm cov yeeb nkab yog D. Tube phab ntsa thickness δ=(P * D) / (2 * σ / S), qhov twg S yog qhov kev nyab xeeb; Vim tias P yog tsawg dua 7MPa, S yog S =8; Yog tias P tsawg dua 17.5MPa, S raug xaiv ua S=6. P siab dua 17.5MPa, S xaiv S =4;
Wb hais tias qhov kev nyab xeeb yog S=6; Lub zog tensile ntawm steel 20 yog 410MPa, yog li lub siab uas cov yeeb nkab tuaj yeem nqa tau P=(2 * σ / S * δ)
/D =(2*410/6*3)/(10 plus 6)
=26.25MPa teeb 17.5, yog li qhov kev nyab xeeb yog S=4
Yog li, lub siab uas cov yeeb nkab tuaj yeem nqa tau P=(2 * σ / S * δ)
/D =(2*410/4*3)/(10 plus 6) =39.375MPa
Piv txwv li: Lub raj cua sov ntawm GL lub rhaub siv φ18 * 2.5 steel springboard pib es tsis txhob ntawm ib txwm φ18 * 2 steel springboard (20 # steel). Tom qab ntawd, lub φ18 * 2 steel springboard tuaj yeem tiv taus lub zog siab ntawm 2.2MPa?
