Studi Eksperimen Pengaruh Amplitudo Sumber Getar Pada Respon Getaran Multi Nodal Plat Mechanical Vibration Exciter Terhadap Arah Gerak Heave, Rolling, dan Pitching

Haq, Aditya (2017) Studi Eksperimen Pengaruh Amplitudo Sumber Getar Pada Respon Getaran Multi Nodal Plat Mechanical Vibration Exciter Terhadap Arah Gerak Heave, Rolling, dan Pitching. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Peralatan mesin industri dan manufaktur dapat menghasilkan getaran dangan arah gerak translasi dan rotasi ke arah sumbu tertentu. Getaran dapat berpengaruh terhadap efektifitas kerja suatu mesin, kususnya pada getaran yang berlebihan berakibat pada reduksi life time kompenen mesin. Aktualnya getaran di peralatan mesin industri dan otomotif bersifat multi axis, baik heave, translasi, yaw, roll dan pitch. Maka studi mengenai karakteristik getaran pada mesin industri diperlukan untuk mengetahui analisa respon getaran yang terjadi pada satu atau lebih bidang. Penelitian tugas akhir ini telah dirancang sebuah mekanisme vibration exciter yang dapat merepresentasikan getaran pada mesin industri dengan arah gerak heave, rolling dan pitching dalam skala laboratorium. Alat exciter ini tersusun dari massa, pegas dan peredam yang dieksitasi oleh gaya sinusoidal dari mekanisme motor dan penggerak. Untuk memperoleh getaran dengan arah gerak heave, rolling dan pitching maka koefisien pegas suspensi plat exciter diset berbeda K1<K2<K3<K4. Guna mendapatkan respon getaran dari plat exciter, mekanisme tersebut diuji respon getaran multi nodal dengan probe accelerometer yang sudah terkoneksi oscilloscop. Respon getaran dari hasil eksperimen dibandingkan dengan respon getaran dari metode simulasi dan pemodelan sistem untuk mengetahui kesamaan bentuk respon. Dari penelitian respon getaran multi nodal pada plat mechanical vibration exciter, telah dirancang dan dibuat alat simulator getar yang dapat merepresentasikan getaran hingga 3 derajat kebebasan ke arah translasi heave, rotasi rolling dan pitching. Selain itu, dari penelitian didapat hasil respon multi nodal dengan pengaruh variasi amplitudo eksitasi sumber getar dan variasi nilai koefisien pegas suspensi. Data yang didapat berupa respon percepatan pada setiap nodal yang ditampilkan dalam bentuk grafik surface 2D dan 3D root mean square untuk membandingkan nilai percepatan getaran pada masing-masing nodal. Penelitian ini membuktikan bahwa semakin besar amplitudo eksitasi berakibat pada naiknya respon getaran disetiap nodal plat mechanical vibration exciter pada sistem 1 , 2 dan 3 derajat kebebasan. ================================================================= Industrial machinery and manufacturing equipment can produce vibrations in the direction of translational and rotational motion. Vibration can affect the effectiveness of the work of a machine, especially in excessive vibration resulted in the reduction of the life time from part machine. Actually vibrations in industrial and automotive machine equipment are multi axis, both heave, translational, yaw, roll and pitch. So a study of vibration characteristics in industrial machinery is needed to find out the analysis of vibration response that occurs in one or more fields. This final project has designed a vibration exciter mechanism that can represent vibration in industrial machine with direction of heave motion, rolling and pitching in laboratory scale. This exciter is composed of masses, springs and dampers that are excited by the sinusoidal force of the motor mechanism and drive. To obtain vibration with the direction of heave motion, rolling and pitching, the coefficient of exciter plate suspension spring is set differently K1<K2<K3<K4. In order to obtain the vibration response from the exciter plate, the mechanism tested the multi nodal vibration response with accelerometer probe connected to oscilloscop. The vibration response of the experimental results is compared with the vibration response of the simulation method and the system modeling to know the similarity of response form. From the research of multi nodal vibration response on the mechanical vibration exciter plate, it has been designed and made vibration simulator tool which can represent vibration up to 3 degrees of freedom toward heave translations, rolling and pitching. In addition, from the research obtained multi nodal response results with variations of excitation amplitude variation of vibration source and variation of spring coefficient of suspension. The data obtained in the form of acceleration response on each node is displayed in the form of surface graph 2D and 3D root mean square to compare the acceleration value of vibration in each node. This study proves that the greater the amplitude of excitation results in the increase of vibration response in each nodal plate mechanical vibration exciter in the system 1, 2 and 3 degrees of freedom

Item Type: Thesis (Undergraduate)
Additional Information: RSM 621.811 Haq s
Uncontrolled Keywords: Respon getaran multi nodal, mechanical vibration exciter, scotch yoke, heave rolling dan pitching vibration
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User: Aditya Haq
Date Deposited: 09 Oct 2017 01:41
Last Modified: 08 Mar 2019 03:04
URI: https://repository.its.ac.id/id/eprint/46241

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