Dewi, Anggie Vibriyanti Rossari (2022) Optimasi Topologi Desain Struktur Air Cooler Support Frame Dengan Metode Lamarckian. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Seiring dengan berkembangnya waktu, preferensi bangunan lepas pantai terpancang lebih mengarah ke struktur minimum daripada struktur kompleks. Hal ini karena struktur minimum dirasa lebih hemat dalam biaya produksi dan biaya operasionalnya serta perawatannya lebih mudah. Untuk memperoleh struktur minimum, dilakukanlah proses optimasi untuk memperoleh desain optimum sebuah struktur dengan meminimumkan beratnya. Adanya proses optimasi terhadap struktur ACSF ini diperlukan untuk mengoptimumkan jalur transmisi beban serta dimensi struktur sehingga akan diperoleh berat minimum struktur dan apabila dibutuhkan struktur yang baru dapat menjadi acuan untuk membuat struktur ACSF yang lebih optimum. Proses optimasi topologi dilakukan dengan metode Lamarckian dan dibantu dengan software SACS. Sementara itu, optimasi dimensi dilakukan dengan bantuan software MATLAB dengan solver fmincon untuk mencari titik minimum dari permasalahan constrained nonlinear multivariable function. Regresi dengan Radial Basis Function dilibatkan untuk untuk mempercepat proses analisis dan menemukan parameter bentuk yang optimal dan baik dalam pemasangan fungsi pada proses optimasi. Hasil optimasi topologi dan dimensi menunjukkan penurunan berat struktur ACSF sebesar 28.75% dan 24.26% untuk struktur ACSF dengan dimensi sesuai katalog pasaran. Struktur ACSF hasil optimasi memiliki kekuatan yang lebih baik, namun dengan unity check yang tidak terlalu konservatif.
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As time progressed, the preference for designed offshore structures was more towards minimum structures than complex structures. The minimum structure is considered more efficient in production and operational costs and easier in maintenance. To obtain a minimum structure, an optimization process is carried out to obtain the optimum design of a structure by minimizing its weight. The existence of an optimization process for the ACSF structure is needed to optimize the load transmission path and structural dimensions so that the minimum weight of the structure will be obtained and if a new structure is needed, it can be a reference to make the ACSF structure more optimal. The topology optimization process is carried out by the Lamarckian method and assisted by SACS software. Meanwhile, dimensional optimization is carried out with the help of MATLAB software with a fmincon solver to find the minimum point of the constrained nonlinear multivariable function problem. Regression with Radial Basis Function is involved to speed up the analysis process and find optimal and good shape parameters in the installation of functions in the optimization process. The results of topology and dimension optimization showed a decrease in the weight of the ACSF structure by 28.75% and 24.26% for the ACSF structure with dimensions according to the market catalog. The ACSF structure of the optimization results has better strength, but with a unity check that is not too conservative.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSKe 627.98 Dew o-1 2022 |
| Uncontrolled Keywords: | Air Cooler Support Frame, Kekuatan Struktur, Lamarckian, Optimasi, Radial Basis Function. Air Cooler Support Frame, Lamarckian, Optimization, Radial Basis Function, Structural Strength. |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC1665 Offshore structures--Materials. |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Marsudiyana - |
| Date Deposited: | 22 May 2026 06:51 |
| Last Modified: | 22 May 2026 06:51 |
| URI: | http://repository.its.ac.id/id/eprint/133348 |
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