Alat bantu edukasi (digital) untuk mempermudah pemahaman arti fisik frekuensi naural dan mode shape getaran longitudinal dan torsional sistem propulsi kapal

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. =============================================================================================== 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 > Naval Architecture and Shipbuilding Engineering > (S1) Undergraduate Theses
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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