Pengaruh Perubahan Geometri PLTHk Paiton Terhadap Respon Getaran

Fawwaz, Muhammad Dzaky (2022) Pengaruh Perubahan Geometri PLTHk Paiton Terhadap Respon Getaran. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pemanfaatan energi terbarukan menggunakan vertical axis turbine telah banyak dilakukan karena memiliki beberapa keuntungan. Namun salah satu kekurangan dari turbin sumbu vertikal adalah fluktuasi gaya yang dihasilkan yang dapat menjadi sumber eksitasi getaran. Penelitian ini bertujuan untuk melihat pengaruh perubahan geometri dan material turbin PLTHk Paiton terhadap frekuensi natural dan modeshapenya, serta respon getaran melalui simulasi dengan menggunakan finite element software. Hasil simulasi menunjukkan bahwa perubahan material mengakibatkan perubahan frekuensi natural sebesar 2,65% pada turbin dual stage dan 2.62% pada turbin single stage. Respon getaran mengalami perubahan akibat variasi material sebesar 5,25% pada turbin dual stage dan 4,93% pada turbin single stage. Pengaruh perubahan geometri turbin mengakibatkan berubahnya frekuensi natural turbin dimana perubahan maksimal adalah sebesar 22.215% untuk turbin dengan material ASTM A36, dan 22.214% untuk material AISI 316. Resultan respon getaran tertinggi turbin dual stage setiap variasi material adalah 1.55 mm, sedangkan resultan respon tertinggi turbin single stage adalah 60.64mm
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Utilization of renewable energy using vertical axis turbines has been widely used because it has several advantages. However, one of the drawbacks of vertical axis turbines is the fluctuation of the resulting force which can be a source of vibration excitation. This study aims to observe the effect due to changes of the geometry and material of the hydrokinetic turbine on the natural frequency and its modeshape, as well as the vibration response through simulation using finite element software. The simulation results show that material variation result in changes natural frequency of 2.65% on dual stage turbine and 2.62% on single stage turbine. The vibration response changes due to material variations is 5.25% on dual stage turbine and 4.93% on on single stage turbine The effect of turbine geometry variations causes changes in the natural turbine frequency where the maximum change is 22.215% for turbines with ASTM A36 material, and 22.214% for AISI 316 material. Highest vibration response of dual stage turbine for each material variation is 1.55mm, while single stage turbine highest response is 60.64mm

Item Type:	Thesis (Other)
Additional Information:	RSF 620.37 Faw e-1 2023
Uncontrolled Keywords:	frekunsi natural, mode shape, respon getaran, modal analysis, transient structural, vertical-axis turbine, natural frequency, mode shape, vibration response, modal analysis, transient structural, vertical-axis turbine.
Subjects:	Q Science > QA Mathematics > QA935 Vibration
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Dzaky Fawwaz
Date Deposited:	27 Feb 2023 06:21
Last Modified:	11 Sep 2023 05:08
URI:	http://repository.its.ac.id/id/eprint/97707

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