Logarithmic decrement, \delta, yog siv los nrhiav qhov damping piv ntawm ib qho underdamped system nyob rau hauv lub sij hawm sau. Cov txheej txheem ntawm logarithmic decrement yuav tsawg dua thiab tsis meej raws li qhov sib piv damping nce yav dhau los txog 0.5; nws tsis siv tag nrho rau qhov damping piv ntau dua 1.0 vim hais tias lub kaw lus overdamped.
Tus lej logarithmic decrement yog dab tsi?
Lub logarithmic decrement sawv cev tus nqi uas qhov amplitude ntawm qhov tsis muaj kev vibration dawb txo qis. Nws txhais tau tias yog lub ntuj logarithm ntawm qhov piv ntawm ob qho tib si amplitudes. Nws pom los ntawm lub sij hawm teb ntawm underdamped vibration (oscilloscope los yog real-time analyzer).
Tus nqi ntawm logarithmic decrement yog dab tsi?
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Dab tsi yog damping ratio formula?
Critical damping coefficient=2 x the square root of (k x m)=2 x the square root of (100 x 10)=63.2 Ns/m. Txij li qhov tseeb damping coefficient yog 1 Ns / m, qhov damping ratio=(1/63.2), uas yog tsawg dua 1. Yog li lub kaw lus yog underdamped thiab yuav oscillate rov qab los ua ntej. los so.
Koj pom qhov damping coefficient li cas?
Koj siv tau cov qauv no: tseem ceeb damping coefficient Cc=2sqrt(km). Txhawm rau xam qhov tseeb damping coefficient 'c', koj yuav tsum tau ua ob qho kev simulation nrog cov khoom siv zoo lossis kev sim. Los ntawm qhov ntawd koj tuaj yeem pom qhov ntau zaus thiab qhov sib piv.
