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: | http://repository.its.ac.id/id/eprint/1383 |
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