Suwardi, Muhammad Atsa (2018) Optimasi Topologi Pada Overhead Crane Box Girder Kapasitas Apasitas 5TX23M Dengan Menggunakan Software Elemen Hingga. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Dalam dunia industri, alat pemindah bahan merupakan hal yang sangat dibutuhkan. Salah satu jenis alat pemindah bahan yaitu overhead crane, yang diaplikasikan pada perusahaan kostruksi, pabrik dan gudang, sehingga pengembangan overhead crane menjadi suatu tantangan dalam memenuhi kebutuhan pasar dengan segala keterbatasannya. Di lain sisi, pada proses pengembangan teknologi, optimasi merjadi suatu kebutuhan dalam memenuhi kebutuhan suatu industri dalam memaksimalkan ukuran material dengan tegangan yang terjadi. Seringkali penggunaan material menjadi sia-sia disaat penggunaan material yang berlebihan pada benda atau produk yang hanya menerima sedikit beban. Penelitian ini mencoba untuk mewujudkan kombinasi tersebut dengan melakukan redesain dengan metode Optimasi Topologi pada girder overhead crane SWL 5Tx23m.
Tahapan penelitian terdiri dari modelling, simulasi model desain awal, Optimasi Topologi, redesain dan simulasi model redesain. Permodelan dilakukan dengan bantuan software Computer Aided Design (CAD). Pada tahap simulasi, beban yang dimasukkan terdiri dari beban SWL, hoist dan material itu sendiri pada tiga posisi pembebanan, yaitu di kiri, tengah dan kanan dari girder. Untuk material yang digunakan yaitu SS400 pada standar JIS atau A36 pada standar ASTM. Tahapan simulasi digunakan software elemen hingga yang diawali oleh simulasi desain awal dengan dan tanpa stiffeners. Tahapan Optimasi Topologi dilakukan pada bagian top flange, web, dan kombinasi top flange dan web dengan persentase massa yang dipertahankan sebesar 80% dan 70%. Sehingga didapat enam model desain hasil Optimasi Topologi. Lalu, hasil dari Optimasi Topologi didesain ulang dan dilakukan simulasi kembali.
Setelah dilakukannya simulasi, didapati beberapa poin penting di antaranya penggunaan stiffeners tidak begitu berpengaruh pada Analisis struktur dengan pembebanan tegak lurus sepanjang stiffeners. Setelah pengujian enam model redesain, didapatkan nilai tegangan maksimum dan total deformasi maksimum yang berbeda-beda. Didapatkan desain terbaik yaitu dengan model redesain web dengan retain 70% dengan nilai tegangan maksimum dan total deformasi maksimum sebesar 157,54 MPa dan 7,4 mm dengan berkurangnya massa total sebesar 375,4 kg. ==============================================================================================================
In the industrial scope, material handling equipment are indispensable. One type of material handling equipment is the overhead crane, which is often applied to construction companies, factories and warehouses. Then, the development of overhead cranes becomes a challenge in meeting the market needs with all its limitations. On the other hand, optimization becomes a necessity in meeting the industry needs in maximizing the size of the material with the stress that occurs. The use of materials is often useless when the use of excessive material on objects or products that receive a little load. This research tries to realize the combination by doing a redesign with topology optimization method on SWL 5Tx23m overhead crane. The Optimization is done by using finite element software.
Research steps consist of modeling, simulation of initial design model, topology optimization, redesign and redesigned model simulation. Modeling began with the making of the initial design with Computer Aided Design (CAD) software. At the simulation stage, the load included consists of SWL, hoist load and material weight itself at three loading positions, which are left, center and right of girder. For the material, this research used SS400 in JIS or A36 standard on ASTM standard. Simulation which used finite element software began with initial design simulation with and without stiffeners. The topology optimization stage is performed on top flange, web, and top flange and web combination with mass percentage maintained at 80% and 70%. So there are six models of topology optimization design results. After the results is obtained, the results of the topology optimization are redesigned and re-simulated.
After doing the simulation, there are some important points obtained such as; the use of stiffeners is not so influential in the analysis of the structure with the loading perpendicular along the of the stiffeners. After simulating the six redesign models, this research found that the maximum stress and maximum total deformation values are different. The best design was obtained with a web model with 70% retain mass with maximum stress and maximum total deformation values are at 157.54 MPa and 7.4 mm with total mass loss at 375.4 kg.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSM 621.873 Suw o-1 3100018075086 |
| Uncontrolled Keywords: | Profil box girder; overhead crane; Optimasi Topologi; metode elemen hingga; girder box profile; overhead crane; topology optimization; 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) T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Atsa Suwardi |
| Date Deposited: | 20 Mar 2018 05:56 |
| Last Modified: | 15 Sep 2020 04:24 |
| URI: | http://repository.its.ac.id/id/eprint/50549 |
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