Refsi, Arya Gading Mei (2021) Analisa Kekuatan Struktur dan Fatigue Pada Modifikasi Reclaim Feeder Dengan Kapasitas 1500 TPH Menjadi 2000 TPH (Studi Kasus Di Workshop Fabrikasi PT. Semen Indonesia Logistik - Gresik). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kenaikan realisasi produksi dan penjualan batu bara 2015 hingga 2020 menuntut produsen didalam negeri untuk terus melakukan inovasi guna meningkatkan produksi lewat pengembangan teknologinya. PT. Semen Indoneisa Logistik sebagai perusahaan yang bergerak di perdagangan barang industri dan fabrikasi melakukan beberapa pembenahan seperti peningkatan kapasitas kerja dari mesin reclaim feeder, reclaim feeder merupakan sebuah mesin yang digunakan dalam sistem distribusi material yang menggunakan sistem konveyor sebagai bagian utamanya. Perubahan pada kapasitas reclaim feeder berpengaruh pada pembebanan dan penyesuaian dimensi pada struktur rangka. Untuk mengevaluasi keamanan struktur tersebut maka perlu dilakukan analisa kekuatan struktur dan analisa fatigue menggunakan software berbasis metode elemen hingga.Tahapan penelitian ini terdiri dari studi literatur, observasi, penentuan parameter desain, pemodelan struktur 3D menggunakan software Computer Aided Drawing, perhitungan teoritis guna mendapatkan gaya dan momen yang terjadi pada reclaim frame, analisis kekuatan struktur dan fatigue dengan software berbasis metode elemen hingga, dan validasi hasil simulasi dengan hasil perhitungan teoritis. Proses analisis kekuatan struktur meliputi beberapa proses seperti pendefinisian model, meshing, input kondisi batas dan kondisi pembebanan, dan proses simulasi hingga mendapatkan nilai tegangan von mises, total deformasi dan safety factor. Uji konvergensi mesh dilakukan guna memilih ukuran mesh dengan hasil error paling kecil dan memastikan hasil simulasi yang lebih stabil. Setelah didapatkan hasil uji konvergensi mesh, maka dilakukan proses simulasi fatigue guna mendapatkan nilai fatigue life struktur sebelum mengalami kegagalan. Berdasarkan penelitian yang telah dilakukan, didapatkan penyesuaian dimensi pada lebar dari desain reclaim feeder menjadi 2,5 meter dari yang sebelumnya 2 meter. Menggunakan simulasi static structural pada software berbasis metode elemen hingga dengan pembebanan merata sebesar 14991 kg pada luasan conveyor didapatkan tegangan von mises sebesar 51,476 Mpa, total deformasi sebesar 1,417 mm dan safety factor 4,764. Dari hasil perhitungan teoritis juga didapatkan safety factor sebesar 4,57. Sehingga berdasarkan hasil simulasi maupun perhitungan teoritis dapat dikatakan bahwa struktur reclaim frame aman untuk beroperasi pada kapasistas 2000 TPH. Selain itu didapatkan juga nilai fatigue life menggunakan simulasi fatigue sebesar 34113 cycle sebelum mengalami kegagalan.
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The realization of coal production and sales continues to increase from 2015 to 2020 requires domestic producers to continue to innovate to increase production through technology development. PT. Semen Indoneisa Logistik as a company engaged in the trade of industrial and fabricated goods made several improvements such as increasing the working capacity of the reclaim feeder, the reclaim feeder is a machine used in a material distribution system that uses a conveyor system as its main part. Changes in the capacity of reclaim feeder affect the loading and dimensional adjustment of the frame structure. To evaluate the safety of the structure, it is necessary to analyze the strength of the structure and analyze the fatigue using software based on the finite element. The stages of this research consist of literature study, observation, determination of design parameters, 3D structural modeling using CAD software, theoretical calculations to obtain the forces and moments that occur in the reclaim frame, analysis of structural strength and fatigue using software based on finite element method, and validation simulation results with the results of theoretical calculations. The process of analyzing the strength of the structure begins with the definition of the model, meshing, input boundary conditions and loading conditions, and the simulation process to get the value of stress equivalent von Mises, total deformation and safety factor. The mesh convergence test is carried out to select the size mesh with the smallest results error and ensure a more stable simulation result. After obtaining the results of the convergence mesh, the simulation process was carried out fatigue in order to obtain the fatigue life of the structure before it failed. Based on the research that has been done, it is found that the dimension adjustment in the width of the reclaim feeder design is 2.5 meters from the previous in 2 meters. Using static structural simulation on software based on the finite element method with uniform loading of 14991 kg on the conveyor area, the von Mises stress is 51.476 MPa, the total deformation is 1.417 mm and the safety factor is 4.764. From the results of theoretical calculations also obtained a safety factor of 4.57. So based on the simulation results and theoretical calculations, it can be said that the reclaim frame is safe to operate at a capacity of 2000 TPH. In addition, the fatigue life value obtained using fatigue simulation is 34113 cycles before failure.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Reclaim Feeder, Reclaim Frame, Analisa Kekuatan Struktur, Analisa Fatigue, Metode Elemen Hingga, Reclaim Feeder, Reclaim Frame, Structural Analysis, Fatigue Analysis, Finite Element Method |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) |
| Divisions: | Faculty of Vocational > Mechanical Industrial Engineering (D4) |
| Depositing User: | Arya Gading Mei Refsi |
| Date Deposited: | 11 Aug 2021 04:44 |
| Last Modified: | 11 Aug 2021 04:48 |
| URI: | http://repository.its.ac.id/id/eprint/85829 |
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