Machfuroh, Talifatim (2016) Studi Pengaruh Penambahan Dual Dynamic Vibration Absorber (DVA)-Dependent Terhadap Respon Getaran Translasi Dan Rotasi Pada Sistem Utama 2-DOF. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Sebuah sistem dapat mengalami getaran yang berlebihan jika gaya yang
bekerja padanya mendekati frekuensi natural dari sistem tersebut. Pada beberapa
kasus, getaran pada sebuah sistem dapat dikurangi dengan memasangkan dynamic
vibration absorber (DVA). Dynamic vibration absorber (DVA) merupakan sistem
massa, damper, dan pegas yang ditambahkan pada sistem utama. Jenis peredam
ini akan bergerak bersamaan dengan sistem utama sehingga getaran pada sistem
utama dapat diredam. Salah satu modifikasi DVA adalah penggunaan dual DVAdependent
pada sistem utama. Dual DVA-dependent merupakan dua buah DVA
menyatu yang dipasang pada sistem utama dengan jarak tertentu. Pada penelitian
ini dipelajari pengaruh penambahan dual DVA-dependent terhadap respon getaran
translasi dan rotasi pada sistem utama 2-DOF. Dalam pemahaman mengenai
fenomena tersebut dibuat model dinamis sistem tanpa penambahan DVA dan
sistem dengan penambahan DVA. Model dinamis sistem tanpa penambahan DVA
digunakan sebagai pembanding terhadap sistem dengan penambahan DVA. Model
dinamis tersebut disimulasikan dengan software Simulink Matlab. Pada model
sistem dengan penambahan DVA, rasio konstanta kekakuan DVA terhadap sistem
yang digunakan sebesar 1/20 dan rasio massa DVA terhadap sistem 1/10 dengan
variasi rasio inersia massa DVA terhadap sistem 1/40; 1/20; dan 1/10 dan variasi
rasio jarak kantilever absorber 1/3; 1/2; dan 1. Dari hasil penelitian didapatkan
bahwa penempatan cantilever absorber DDVA-dependent pada ujung system
dengan rasio inersia massa absorber 1/10 mampu mereduksi getaran system
utama dengan prosentase pengurangan pada frekuensi 12,78 Hz sebesar 94,1681
% untuk arah translasi dan 15,3878 % untuk arah rotasi. Perubahan rasio jarak dan
rasio inersia massa absorber tidak mempengaruhi kemampuan DDVA-dependent
dalam mengurangi getaran arah translasi. Kemampuan DDVA-independent sama
dengan DDVA-dependent dalam mereduksi getaran arah translasi dan lebih baik
daripada DDVA-dependent dalam mereduksi getaran arah rotasi dengan
prosentase pengurangan sebesar 80,3252% pada frekuensi 12,78 Hz untuk
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A system can be subjected to excessive vibration if the force acting on it
approaching the natural frequency of the system. To overcome, the traditional
treatment method that involves structural modifications often take some time and
expensive. In some cases, a vibration in a system can be reduced by installing
dynamic vibration absorber (DVA). Dynamic Vibration Absorber (DVA) is a
mass, damper, and spring system which is added to the main system. This kind of
absorber will move together with the main system to reduce the vibration of the
main system. In order to reduce the vibration, modification of DVA is required.
One modification is the using of dual DVAs-dependent in the main system. Dual
DVAs-dependent are two fused DVA which are mounted on the main system at a
certain distance.In this research, it is studied about the effect of the addition dual
DVA-dependent in the translational and rotational vibration response at the 2-
DOF primary system. In the understanding of this phenomenon, it is created a
dynamic model of the system without the addition of DVA and system with the
addition dual DVA-dependent. A dynamic model of the system without the
addition DVA is used as a comparison against the system with the addition of
DVA. The dynamic model is simulated with Matlab Simulink software. In the
model system with the addition of the DVA, the ratio of stiffness DVA to the
system is 1/20 mass ratio is 1/10 with variations of inertia ratio DVA to system
are 1/40, 1/20, and 1/10 and variations of distance ratio of absorber cantilever are
1/3, 1/2, and 1.The result of this studied showed that the cantilever absorber
placement of DDVAs-dependent at the end of the system with mass inertia
absorber ratio of 1/10 can reduce the vibration of primary system which reduced
with a 94.1681% for translation direction and 15.3878% for rotation direction in
the frequency of 12.78 Hz. The changes of distance ratio and inertial mass
absorber ratio have no effect on the ability of DDVAs-dependent to reduce
vibration of translational direction. The capabilities of DDVAs-independent are
same with DDVA-dependent in reducing vibration of translational direction and
its better than DDVA-dependent in reducing vibration of rotational direction with
the percentage of reducing is 80.3252% in the frequency 12.78 Hz on rL = 1
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTM 629.243 Mac s |
| Uncontrolled Keywords: | pemodelan dinamis, dual DVA-dependent, peredam getaran |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21101-(S2) Master Thesis |
| Depositing User: | Users 13 not found. |
| Date Deposited: | 06 Jul 2017 03:33 |
| Last Modified: | 06 Jul 2017 03:33 |
| URI: | http://repository.its.ac.id/id/eprint/41889 |
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