Wicaksono, Purnomo Adhi (2015) Alat bantu edukasi (digital) untuk mempermudah pemahaman arti fisik frekuensi naural dan mode shape getaran longitudinal dan torsional sistem propulsi kapal. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Masalah getaran longitudinal dan torsional sistem propulsi kapal
dianalisa dengan menggunakan model diskrit sistem getaran dengan banyak
derajat kebebasan. Beberapa cara untuk menentukan parameter-parameter
dalam perhitungan getaran longitudinal dan torsional dibahas dan cara-cara
penentuan banyaknya derajat kebebasan juga dibicarakan. Metode numerik
yang efektif dipilih dengan mempertahankannya se-general mungkin sehingga
bisa digunakan tidak hanya untuk masalah getaran saja, namun juga dalam
masalah lain yang sebanding. Komputer algoritma dikembangkan
menggunakan metode iterasi yang seefektif mungkin sehingga konvergensi
bisa didapat dengan cepat tanpa harus mengorbankan ketelitian. Hasil yang
didapatkan berupa besarnya frekuensi natural, mode shape dan animasi yang
bertujuan agar mempermudah dalam pemahaman frekuensi natural dan mode
shape. Sebagai tambahan, program ditambahkan perhitungan dari massa,
momen inersia massa dan kekakuan pegas.
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The Longitudinal and torsional vibration problems of ship propulsion system
is analyzed with a discrete model with many degrees of freedom. Several methods to
determine the parameters in the calculation of longitudinal and torsional vibrations
and the number of degrees of freedom are discussed. The effective numerical
method choosen is not limited to solve ship propulsion vibration problems. But can
also be used for common vibration problem with minor modification. The algorithm
is developed using an effective iterative method that it converges quickly
determined without sacrificing precision. The resulting natural frequencies and
mode shapes is animated to facilitate better understanding of the concept. As a
bonus, pre-processor software is added to facilitate the calculation of mass of the
object, mass moment of inertia, and spring stiffness.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSPe 623.873 Wic a |
| Uncontrolled Keywords: | Getaran longitudinal dan torsional sistem propulsi, Frekuensi Natural, Mode Shape. |
| Subjects: | Q Science > QA Mathematics > QA935 Vibration |
| Divisions: | Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Marsudiyana - |
| Date Deposited: | 25 Nov 2019 02:19 |
| Last Modified: | 25 Nov 2019 02:19 |
| URI: | http://repository.its.ac.id/id/eprint/71998 |
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