Analisis Dinamis Rolling Kendaraan dengan menggunakan Variable Geometry Suspension

Allawiy, Muhammad Farih (2019) Analisis Dinamis Rolling Kendaraan dengan menggunakan Variable Geometry Suspension. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalamsuatukendaraan,sistemsuspensiberperanutamauntuk meredam getaran yang berasal dari permukaan jalan yang tidak merata. Namun kendaraan pada umumnya masih menggunakan sistemsuspensipasifyanghanyamampumeredamgetarandengan koefisienpegasdanredamanyangkonstansehinggaperedamangetaran belum maksimal dan dapat mengganggu kenyamanan berkendara. Sehingga dikembangkan suspensi semi-aktif dan suspensi aktif. Dari kedua pengembangan suspensi ini masih memiliki kekurangan berupa konsumsi daya yang lebih besar dan biaya perawatan yang mahal. Lalu dikembangkan sistem variable geometry suspensiondenganmengandalkanefisiensidayadanperformaperedaman yang lebih baik dari suspensi pasif. Penelitian terdahulu yang telah dilakukan hanya menggunakan model seperempat kendaraan sehingga tidak bisa mengetahui fenomena rolling kendaraan saat menggunakan sistem variable geometry suspension. Oleh karenaitu,penelitianinimenganalisisdinamikadarirollingkendaraan dengan menggunakan sistem variable geometry suspension. Metodologi yang digunakan pada penelitian ini adalah membuatpemodelannonlineardenganmenggunakansoftwaremultibody nonlinear. Selanjutnya adalah membangun sistem eksitasi untuk roda kiri dan kanan untuk memberi gaya eksternal yang menggambarkan permukaan jalan yang tidak rata. Simulasi dilakukan dengan menggunakan simulasi numerik dalam software MATLAB Simmechanics. Sehingga didapatkan hasil dari simulasi berupa respon percepatan sprung mass, defleksi suspensi, deformasi ban, dan sudut camber. Dari hasil yang didapatkan berupa percepatan sprung mass dengan menggunakan variable geometry suspension lebih kecil dibandingkan dengan suspensi pasif sehingga meningkatkan kenyamanankendaraan. Defleksipadasuspensisaatmenggunakanvariable geometry suspension lebih kecil dibandingkan dengan menggunakan suspensi pasif. Sudut camber saat menggunakan variable geometrysuspensionsaatdiubahkesegalaposisicenderungmenuju negatif.
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In a vehicle, suspension system plays a major role in reducing vibration from uneven road profiles. However, vehicles in general still use a passive suspension system which is only able to reduce vibration with a constant spring and damping coefficient and so that suspension performance is not optimal and can disrupt driving comfort. So that it developed semi-active suspension and active suspension. These two developments still has shortcomings in the form of greater power consumption and expensive maintenance costs. Then a variable geometry suspension system was developed by relying on power efficiency and better suspension performance than passive suspension. Previous research has been done using a quarter-vehicle model so that it can’t analyze the phenomenon of rolling dynamic of a vehicle when using a variable geometry suspension system. Therefore, this study analyzes the rolling dynamic of vehicle using a variable geometry suspension system. The methodology used in this study is build nonlinear modeling using nonlinear multibody software. Next step is build an excitation system for the left and right wheels to give an external force that describes the uneven road profile. Simulation is done using numerical simulation in MATLAB Simmechanics software. So the results obtained from the simulation are sprung mass acceleration, suspension deflection, tire deformation, and camber angle. From the simulation that has been done, the result is the acceleration of the sprung mass by using variable geometry suspension is smaller than passive suspension thus increasing driving comfort. Deflection of suspension when using variable geometry suspension is smaller than passive suspension. The camber angle formed when using variable geometry suspension with the angle of the actuator being changed to any position tends to be negative.

Item Type:	Thesis (Undergraduate)
Additional Information:	RSM 629.243 All a-1 2019
Uncontrolled Keywords:	sistem suspensi, suspensi aktif, variable geometry suspension
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL257.5 Automobiles--Shock absorbers--Design and construction.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Farih Allawiy
Date Deposited:	24 Nov 2021 04:44
Last Modified:	24 Nov 2021 04:44
URI:	http://repository.its.ac.id/id/eprint/61621

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