Optimisasi - Desain Clutch Housing Pada Continuously Variable Transmission (CVT) Sepeda Motor Berdasarkan Natural Frekuensi

Mukhtarifin, Muh. Amri and , Anggono Agus Dwi , S.T, M.Eng, Ph.D and , Waluyo Adi Siswanto, M.Eng., Ph.D (2020) Optimisasi - Desain Clutch Housing Pada Continuously Variable Transmission (CVT) Sepeda Motor Berdasarkan Natural Frekuensi. Thesis thesis, Universitas Muhammadiyah Surakarta.

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Abstract

This study aims to determine the vibration pattern and natural frequency of clutch housing with different designs and analyzed using three variations of material and element size. With the research data obtained, it is hoped that it can be used as a reference and reference for selecting a clutch housing design whose frequency value is different from the operational frequency at each rotation condition to optimize the design from the factory default design. Because if the frequency value is the same as the operational frequency, there will be excessive vibration (resonance) which causes discomfort and even product failure. This study uses the Finite Element Method. The design and analysis were made using CATIA V5 software, the analysis was carried out based on natural frequency with three variations of element sizes, namely 3 mm, 6 mm, and 9 mm. The research model uses a Continuously Variable Transmission (CVT) motorbike component, in this case the Honda Beat motorcycle clutch housing secondary pulley is used. Before doing 3D design modeling using CATIA V5, the dimensions of the clutch housing secondary pulley of the Honda Beat motorbike are first carried out in order to obtain a valid design in accordance with existing factual conditions. In addition to the main design based on actual dimensions, two modified designs were made after a natural frequency analysis was carried out in the main design. The modified design is made to reduce the weight of the clutch housing, with the reduction in weight, it is expected that the value of the clutch housing frequency changes and does not equal the operating frequency at each rotation condition. The design modification is done by giving a hole in the clutch housing area which during the simulation is a safe area (low voltage) so that there is no damage to the clutch housing. The second design is modified by giving holes in the outer plane of the clutch housing as many as 9 holes with a diameter of 10 mm, while the third design gives holes in the outer plane as many as 12 holes with a diameter of 10 mm for large holes and 5 mm for small holes, while on the inside as well. given holes as many as 6 holes with a diameter of 8 mm. Three designs have been made, then a natural frequency analysis is carried out using three different material variations, namely JIS G 4104 steel as the actual material of the clutch housing, AISI 1045 Steel because this material is often used in rotating and rubbing automotive components, this material is also used in car clutch housing, and Gray Cast Iron G260 is currently being widely used in motorbike parts accessories because it is very good at reducing the effects of vibration. The results showed that the greater the modes number, the greater the frequency value. Therefore, the observation is focused on the modes number whose frequency value is the same as the operational frequency of the clutch housing under various rotation conditions. The simulation results show that design 2 with JIS G 4104 steel and AISI 1045 steel is the best design to use because only 2 modes number have the same frequency value as the operational frequency at 1,000 - 10,000 RPM. Meanwhile, for designs 1 and 3, for all types of materials, there are 3 modes number, the frequency value is the same as the operational frequency in the 1,000 - 10,000 RPM cycle. Likewise in design 2 with Gray Cast Iron G260 material. The vibration patterns that occur in the first, second and third clutch housing designs indicate a displacement on the x, y and z axes but the displacement is still in a safe condition. This happens to all types of materials used. Keyword: Design Optimization, Clutch Housing, Free Frequency Analysis.

Item Type:	Karya ilmiah (Thesis)
Uncontrolled Keywords:	Data, Informasi, Perpustakaan, Optimisasi Desain, Clutch Housing, Natural Frekuensi
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions:	Fakultas Pasca Sarjana > Magister Teknik Mesin
Depositing User:	MUH AMRI MUKHTARIFIN
Date Deposited:	21 Dec 2020 06:07
Last Modified:	21 Dec 2020 06:07
URI:	http://eprints.ums.ac.id/id/eprint/87931

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