MOCH BANU HARJANA. Pengaruh Efek Re

MOCH BANU HARJANA. Pengaruh Efek Redaman terhadap Getaran Paksa dengan Massa Unbalance pada Vibration Apparatus Sistem Satu Derajat Kebebasan. Pembimbing: Ahmad Kholil, S.T., M.T. dan Drs. Sirojuddin, M.T.
Dalam menganalisis suatu getaran yang kompleks, maka memerlukan alat simulasi uji getaran yang terdiri dari pegas, massa, peredam dan gaya eksitasi. Vibration apparatus sistem satu derajat kebebasan teredam merupakan salah satu alat simulasi uji getaran yang dapat menentukan besaran-besaran getaran yang terjadi pada mesin yang berputaar yang disebabkan oleh massa tidak seimbang pada elemen yang sedang berputar. Dengan menggunakan alat simulasi getaran maka dapat diketahui frekuensi pribadi, mengetahui efektifitas redaman menggunakan peredam oli, pengaruh efek redaman oli terhadap getaran paksa dan melihat hubungan grafik putaran motor DC dalam RPM dengan amplitudo pada saat resonansi, kemudian dapat dibuktikan dengan perhitungan menggunakan rumus yang sudah baku. Kemudian peneliti menguji getaran paksa teredam dengan redaman oli SAE 20 dan 30 pada interval kecepatan putaran 0 sampai dengan putaran 400 RPM dengan selisi 10 RPM dan mengunakan massa unbalance 10 gram, 15 gram, 20 gram dan 25 gram sebagai gaya pengeksitasinya. Semakin kental viskositas peredam, semakin besar efek redaman untuk menurunkan amplitudo pada sistem yang bergetar. Dalam pengujian tersebut, maka diperolehhasil rasio redaman 0.2435 untuk oli SAE 20 dan 0.4331 untuk oli SAE 30. Dari data tersebut, efek redaman terbesar pada oli SAE 30.

Kata kunci: Vibration apparatus sistem satu derajat kebebasan, efek redaman, getaran paksa, frekuensi pribadi

Hasil (Inggris) 1:

BANU HARJANA MOCH. Influence of Damping Effect against the forced Vibration with Mass Unbalance on Vibration Apparatus system of one degree of freedom. Supervisor: Ahmad Kholil, S.T., M.T. and Drs. Sirojuddin, M.T. In analyzing a complex vibration, then the vibration test simulation tool requires that consists of a spring, mass, shock and force excitation. Vibration apparatus system of one degree of freedom system is one of the tools of simulation test for vibration that can determine the quantities of the vibration that occurs on a machine that berputaar caused by the unbalanced mass on the element that is being spun. By using the tool of simulation of the vibration frequency can be known then, knowing the effectiveness of damping using the reducer oil, influence the damping effect of vibration force against oil and see the relationship graph in DC motor rotation RPM with the amplitude the resonance at the time, then it can be proven by calculation using the formula already raw. Then researchers test the vibration damped with damping force oil SAE 20 and 30 rounds of speed in the interval 0 to 400 RPM with round with selisi 10 RPM and use mass unbalance 10 g, 15 g, 20 g and 25 g as style pengeksitasinya. The more viscous a viscosity reducer, the larger the damping effect to lower the amplitude on the system that vibrates. In these tests, then the damping ratio 0.2435 diperolehhasil to SAE 20 oil and SAE 30 oil to 0.4331. From these data, the effect of damping on the largest oil SAE 30.Keywords: Vibration apparatus system of one degree of freedom, the effect of damping, the vibration frequency of the force, private

Hasil (Inggris) 2:

MOCH BANU Harjana. Effects Vibration damping influence on the mass Forced Vibration Apparatus unbalance the System One Degree of Freedom. Supervisor: Ahmad Kholil, ST, MT and Drs. Sirojuddin, MT
In analyzing a complex vibration, the vibration test requires a simulation tool that consists of a spring, mass, damper and excitation forces. Vibration system apparatus damped one degree of freedom is one of the vibration test simulation tool that can determine the magnitudes of vibration that occurs on a machine that berputaar caused by unbalanced mass of the element that is turning. By using a simulation tool vibration it can be seen natural frequency, determine the effectiveness of attenuation using the damper oil, the effect of damping effect of oil on the vibration force and the relationship graph DC motor rotation in RPM amplitude at resonance, then it can be proved by calculation using a formula that is standard , Then the researchers tested the forced vibration damped with damping oil SAE 20 and 30 at the interval rotation speed from 0 to 400 RPM rotation at 10 RPM and use selisi unbalance mass of 10 grams, 15 grams, 20 grams and 25 grams as pengeksitasinya style. The more viscous the viscosity reducer, the greater the damping effect to reduce the amplitude of the vibrating system. In these tests, then the damping ratio 0.2435 diperolehhasil for SAE 20 oil and 0.4331 for oil SAE 30. From these data, the greatest damping effect on oil SAE 30. Keywords: Vibration apparatus system of one degree of freedom, the effect of damping, forced vibration, natural frequency