Video: IX thiab IY yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub sijhawm ntawm inertia tseem hu ua Lub Sijhawm Thib Ob ntawm Thaj Chaw thiab yog. qhia lej raws li: Ix = ∫Ay2dA. Iy = ∫Ax2dA.
Tsis tas li ntawd, Ixx thiab Iyy yog dab tsi?
Ixx yog lub sij hawm ntawm inertia raws tus x axis. Ib yog lub sij hawm ntawm inertia raws y axis. Raws li peb paub lub sijhawm ntawm inertia yog ib txwm nyob ntawm qee qhov axis uas yog vim li cas cov no yog lub sijhawm ntawm inertia raws ob axis. Lub sijhawm ntawm inertia raws tus thib peb axis i.e Z axis yog xam los ntawm- Izz = Ixx + Ib.
Tsis tas li ntawd, thaj tsam lub sij hawm ntawm inertia siv rau dab tsi? Cov cheeb tsam lub sij hawm ntawm inertia yog ib qho cuab yeej ntawm ib qho kev hla uas tuaj yeem ua tau siv rau kwv yees qhov kev tiv thaiv ntawm kab teeb rau khoov thiab deflection, nyob ib ncig ntawm lub axis uas nyob rau hauv lub dav hlau cross-sectional.
Tom qab ntawd, lo lus nug yog, dab tsi yog lub sijhawm ntawm inertia ntawm daim duab plaub?
Ib qho axis dhau los ntawm Nws Centroid Thaum peb ua qhov xwm txheej thaum lub axis hla mus rau hauv nruab nrab, lub sij hawm ntawm inertia ntawm a duab plaub yog muab raws li: I = bh3 / 12. Ntawm no, b yog siv los qhia tus duab plaub dav (qhov dimension parallel mus rau lub axis) thiab h yog hais tias yog qhov siab (dimension perpendicular rau lub axis)
Qhov unit ntawm inertia yog dab tsi?
Cov chav tsev rau inertia yog tib yam li cov units rau qhov hnyav, kg chav tsev ntawm moment of inertia yog kg. m2 ua. m 2 ua. Inertia yog qhov tsis kam mus rau linear acceleration los ntawm lub zog siv rau lub cev. Lub sijhawm ntawm inertia yog qhov tsis kam rau angular acceleration los ntawm torque siv rau lub cev.
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