DESAIN DAN ANALISA SISTEM SUSPENSI MOBIL PRODUKSI MULTIGUNA PEDESAAN DENGAN STANDAR KENYAMANAN ISO 2631

PUTRA, ANGGA RAMADHANA (2016) DESAIN DAN ANALISA SISTEM SUSPENSI MOBIL PRODUKSI MULTIGUNA PEDESAAN DENGAN STANDAR KENYAMANAN ISO 2631. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Mobil produksi multiguna pedesaan merupakan proyek kerjasama antara ITS beserta DISPERINDAG yang bertujuan untuk mendukung produktifitas masyarakat pedesaan. Idealnya, faktor kenyamanan dan keamanan penumpang merupakan hal yang sangat penting pada kendaraan, dimana sistem suspensi merupakan salah satu bagian penting pada kendaraan yang memegang peranan tersebut. Pada mobil multiguna pedesaan ini, kondisi jalan yang akan dilewati tidak hanya jalan kota, namun juga jalan pedesaan. Selain itu, kondisi beban yang diangkut juga bervariasi. Oleh karena itu, sistem suspensi harus mampu memberikan kenyamanan dan keamanan dengan berbagai variasi tersebut. Pada tugas akhir ini, terdapat dua macam tahapan, yakni tahap desain dan tahap analisa. Pada tahap desain, dilakukan perhitungan untuk mencari nilai konstanta kekakuan pegas dan simulasi untuk mencari konstanta redaman suspensi yang baik. Nilai konstanta kekakuan pegas dicari dari beban maksimal yang bekerja pada suspensi serta defleksi maksimal suspensi, dimana dalam hal ini beban maksimal adalah gabungan dari beban statis, serta beban dinamis saat kendaraan bergerak lurus mengalami perlambatan maksimum. Nilai konstanta redaman dicari berdasarkan pemodelan half car melintang dengan menggunakan metode state space, kemudian dilakukan simulasi dengan bantuan software dengan variasi rasio redaman (0,3 < ζ < 0,7) dan input berupa jalan sinusoidal dengan amplitudo 5 cm dan panjang gelombang 1 m. Konstanta redaman ditentukan berdasarkan hasil simulasi yaitu dilihat dari grafik kenyamanan dan keamanan. Setelah mengetahui konstanta redaman yang dipakai maka selanjutnya adalah melakukan simulasi untuk menentukan bantalan kursi yang dipakai. Selanjutnya melakukan simulasi untuk menentukan perpindahan massa sprung dan unsprung, dan juga menentukan defleksi maksimal suspensi. Parameter hasil perancangan ulang antara lain, kekakuan pegas suspensi depan (Ksf) = 46599,64709 N/m, redaman suspensi depan (Csf) = 3861,591 Ns/m, kekakuan pegas suspensi belakang (Ksr) = 24201,08491 N/m, dan redaman suspensi belakang (Csr) = 2782,867 Ns/m. Hasil analisa menunjukkan bahwa respon suspensi aktual (perhitungan) dan yang ada di pasaran dengan input profil jalan sinusoidal yang mempunyai amplitudo 5 cm dan panjang gelombang 1 m, suspensi perhitungan menghasilkan kenyamanan yang lebih baik daripada suspensi yang ada di pasaran, sedangkan untuk kemampuan menapak jalan, suspensi yang ada di pasaran lebih baik daripada suspensi hasil perhitungan. "=============================================================================================" The versatile production rural car is a project cooperation between ITS and DISPERINDAG which aims to support productivity rural communities. Ideally , factors comfort and security of the passengers is a very important thing on a vehicle , where suspension system is one of an important part to vehicles has a role to play. On this era of an automobile versatile rural car, road conditions will passed by not only a city boulevard, but also rural road. In addition, the condition of the burden on the transported also varied. Hence, suspension system must be able to provide security and comfort with various these variations. In this final task, there are two kinds of stages, there are the design phase and phase analysis. In the design phase, carried out the calculations to find the spring stiffness constant values and simulation to find the good suspension damping constants. The value of the constant stiffness spring sought from maximum load acting on the suspension as well as the maximum deflection of the suspension, which in this case the maximum load is a combination of a static load, as well as the dynamic load when the vehicle is moving straight maximum deceleration experienced. Constant value damping sought based on modeling half car transverse by using the method state space , we do simulations with assistance software with the variation of the ratio damping (0,3 < ζ < 0,7) and input of the way is sinusoidally with amplitude 5 centimeters and wavelengths 1 meters. Constant damping determined based on the results of simulation that can be seen from graphs of comfort and security .After knowledge constant damping used then afterward is did the simulation to determine bearing seats used. Next is do the simulation to determine displacement mass sprung and unsprung , and also determines deflection maximum suspension . Redesign results parameter among others, stiffness of spring front suspension (Ksf) = 46599.64709 N/m, damping front suspension (Csf) = 3861.591 Ns/m, stiffness of spring rear suspension (Ksr) = 24201.08491 N/m, and damping rear suspension (Csr) = 2782.867 Ns/m. Results of the analysis showed that the actual suspension response (calculation) and that is on the market with a sinusoidal path profile input has an amplitude of 5 cm and 1 m wavelength suspension, calculation produces a better comfort than the suspension that is on the market, as for the ability of the flat roads, the suspension is there in the market better than the suspension of the calculation result.

Item Type: Thesis (Undergraduate)
Additional Information: RSM 629.243 Put d
Uncontrolled Keywords: Sistem Suspensi, Kenyamanan, Keamanan, Half Car, ISO 2631
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User: Users 13 not found.
Date Deposited: 09 Jan 2017 02:32
Last Modified: 27 Dec 2018 03:53
URI: https://repository.its.ac.id/id/eprint/1383

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