Analisa Pengaruh Tuned Mass Damper (TMD) Untuk Benda Kerja Silinder Pejal Pada Proses Milling

Azizi, Iman (2021) Analisa Pengaruh Tuned Mass Damper (TMD) Untuk Benda Kerja Silinder Pejal Pada Proses Milling. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Saat ini, dunia industri manufaktur berkembang sangat pesat. Mengingat kegiatan produksi tidak lepas dari penggunaan mesin-mesin sebagai pendukung operasionalnya. Suatu mesin yang ideal seharusnya tidak menimbulkan kebisingan atau getaran yang berlebih saat dioperasikan. Suatu getaran yang berlebih akan menyebabkan keefektifan mesin menurun bahkan mengakibatkan mesin tersebut tidak dapat dioperasikan kembali. Salah satu cara untuk mengurangi getaran yang berlebih adalah dengan menggunakan Tuned Mass Damper (TMD).
Pada penelitian tugas akhir ini, dilakukan simulasi analisa respons getaran pada benda kerja yang ditambahkan TMD menggunakan software ANSYS Workbench dengan variabel ketinggian massa absorber, ketebalan karet peredam, dan jarak antar baut penyangga dengan benda kerja pada kondisi parameter pemotongan tertentu. Benda kerja menggunakan silinder pejal material AISI 1045 Medium Carbon Steel dengan diameter dan panjang 30 dan 250 mm. Sedangkan TMD terletak pada atas benda kerja yang telah dicekam oleh ragum. TMD tersusun atas beberapa komponen yaitu karet yang terbuat dari natural rubber, lalu cincin, massa peredam, dan pelat datar yang terbuat dari Aluminium 7075-T6 serta baut pen-cekam dan baut penyangga yang berbahan structural steel. Variasi yang digunakan yaitu posisi ketinggian TMD 90 mm, 70 mm, dan 50 mm diukur dari kaki benda kerja. Lalu variasi tebal panjang karet 10 mm, 20 mm dan 30 mm. Dan variasi bentuk geometri massa absorber dengan massa yang dijaga tetap. Semua variasi dilakukan dengan kondisi cutting parameters dan input gaya yang tetap agar mendapat hasil penelitian yang sesuai dengan tujuannya.
Hasil dari penelitian ini adalah analisa persentase reduksi getaran yang dihasilkan mesin milling setelah penambahan TMD pada sistem utama di setiap variasi yang telah di tetapkan. Dari semua kombinasi variabel penelitian didapatkan hasil terbaik untuk variasi bentuk massa absorber M1 dengan posisi ketinggian TMD 90 mm dan tebal panjang karet peredam 30 mm. Persentase reduksi yang dihasilkan mencapai nilai 53,4%. Nilai ini cukup baik untuk menunjukkan bahwa desain TMD yang dirancang dapat meredam dengan baik.
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Currently, the world of the manufacturing industry is growing very rapidly. Considering that production activities cannot be separated from the use of machines as operational support. An ideal machine should not cause excessive noise or vibration when operating. An excessive vibration will cause the effectiveness of the machine to decrease and even result in the machine not being able to be operated again. One way to reduce excessive vibration is to use a Tuned Mass Damper (TMD).
In this final project, a simulation of the vibration response analysis on the workpiece added by TMD was carried out using the Workbench ANSYS software with the variable height of the absorber mass, the thickness of the damper rubber, and the distance between the supporting bolts and the workpiece at certain cutting parameter conditions. The workpiece uses a solid cylinder of AISI 1045 Medium Carbon Steel material with a diameter and length of 30 and 250 mm. While the TMD is located on the workpiece that has been gripped by a vise. TMD is composed of several components, namely rubber made of natural rubber, rings, damper mass, and flat plates made of Aluminum 7075-T6 as well as clamping bolts and support bolts made of structural steel. The variation used is the position of the TMD height position of 90 mm, 70 mm, and 50 mm measured from the foot of the workpiece. Then the variations in the length of the rubber are 10 mm, 20 mm and 30 mm. And variations in the geometric shape of the absorber mass with the mass being kept constant. All variations are carried out with constant cutting parameters and force input conditions in order to obtain research results that are in accordance with their objectives.
The result of this research is the analysis of the percentage of vibration reduction produced by the milling machine after the addition of TMD to the main system in each variation that has been set. Of all the combinations of research variables, the best results were obtained for variations in the shape of the M1 absorber mass with a TMD height position of 90 mm and a thickness of 30 mm rubber damper. The resulting reduction percentage reached a value of 53.4%. This value is good enough to show that the designed TMD design can absorb well.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Cutting Parameters, Vibration, Milling Process , Tuned Mass Damper (TMD), Vibration Reduction.
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Iman Azizi
Date Deposited:	23 Aug 2021 07:22
Last Modified:	23 Aug 2021 07:22
URI:	http://repository.its.ac.id/id/eprint/89938

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