Yusqi, Andik Ahmad (2018) Analisis Numeris Tegangan Lokal pada Sambungan Stiffened Plate Berbasis Matlab. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Software untuk perhitungan tegangan pada struktur biasanya menggunakan bantuan software komersil seperti ANSYS Workbench, ABAQUS, SACS, SAP 2000 dan jenis software struktur lainnya, padahal untuk analisis struktur sederhana seperti stiffened plate yang akan dibahas pada Tugas Akhir ini bisa dipecahkan dengan metode numeris dengan bantuan software matlab yang notabene tidak semahal software struktur yang telah disebutkan diatas. Tugas akhir ini menyajikan bagaimana menyelesaikan analisis tegangan suatu struktur menggunakan metode elemen hingga dengan memodelkan struktur ke bentuk dua dimensi. Metode elemen hingga membantu menyelesaikan perhitungan tegangan dengan membagi model menjadi beberapa elemen yang kemudian dapat dihitung nilai tegangannya dengan membuat listing fungsi pada matlab. Elemen yang dipakai dalam analisis ini yaitu elemen quadratic quadrilateral, dimana dalam satu elemen segi empat terdapat 8 node dengan masing-masing node memiliki 2 derajat kebebasan. Dari analisis tegangan pada matlab kemudian divalidasikan dengan software ANSYS Workbench, didapatkan error terkecil yaitu 1.123 % pada elemen 1 dan error terbesar yaitu 2.938 % pada elemen 6. Hasil tersebut didapatkan setelah dilakukan 11 kali percobaan variasi meshing pada software ANSYS Workbench, rata-rata hasil tegangan konstan setelah percobaan variasi meshing ke-6. Dengan error yang masih bisa ditoleransi, dapat dikatakan bahwa listing fungsi yang dibuat pada matlab valid.
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Software to calculate on the structure usually use the help of commercial software such as ANSYS Workbench, ABAQUS, SACS, SAP 2000 and other structural software types, for simple structure like stiffened plate which will be discussed in this Final Project can be solved by numerical method with the help of matlab software notabene not as expensive software structure that has been reviewed above. This final project presents how to solve the stress analysis of a structure using finite element method by modeling the structure to two dimensional form. The finite element method helps solve the stress calculation by dividing the model into several elements which can then be calculated by the value of the stress by creating function listings on matlab. The element used in this analysis is quadrilateral quadratic elements, where in a rectangular element there are 8 nodes with each node having 2 degrees of freedom. From the stress analysis on matlab then validated with ANSYS Workbench software, got the smallest error that is 1.123 % in element 1 and the biggest error is 2.938 % in element 6. The result is got after 11 times experiment variation meshing on software ANSYS Workbench, constant after experiment of 6th meshing variation. With an error that can still be tolerated, it can be said that the list of functions created on matlab is valid.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSKe 627.98 Yus a-1 3100018074972 |
| Uncontrolled Keywords: | Analisis tegangan, Stiffened plate, Metode elemen hingga, Quadratic quadratic element, Software Matlab, Stress analysis, Stiffened plate, Finite element method |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | Andik Ahmad Yusqi |
| Date Deposited: | 09 Feb 2018 06:39 |
| Last Modified: | 30 Mar 2020 06:38 |
| URI: | http://repository.its.ac.id/id/eprint/50457 |
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