Pradana, Tjahyadi Rizky (2016) Analisa Perilaku Arah Kendaraan Dengan Variasi Posisi Titik Berat, Sudut Belok Dan Kecepatan Pada Mobil Formula Sapuangin Speed 3. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Pada tahun 2015, ITS Team Sapuangin untuk ketiga kalinya mengikuti lomba Student Formula Japan yang diadakan oleh Japan Society of Automotive Enginee (JSAE). Dalam lomba ini setiap tim diharuskan untuk mengikuti dynamic event dalam perlombaan tersebut, antara lain acceleration, skid-pad, autocross dan endurance. Target Team Sapuangin yaitu menjuarai skid-pad, karena mobil Sapuangin Speed 4 memiliki mesin dengan kapasitas yang kecil dibandingkan dengan tim-tim dari negara lain. Namun kenyataannya ITS Team Sapuangin hanya mampu menyelesaikan skid-pad dengan waktu 5,73 detik. Pada perlombaan ini, TU Graz adalah tim yang berhasil menjuarai perlombaan skid-pad ini dengan waktu 5,03 detik. Kendala yang dialami Sapuangin Speed 3 adalah sulit dikendalikan dan mengalami understeer maupun oversteer. Dengan kondisi kendaraan yang sulit diprediksi seperti ini, pengemudi harus selalu melakukan koreksi, sehingga sulit untuk mendapatkan waktu capaian yang baik. Permasalahan ini akan dicoba dianalisa penyebabnya agar pada tahun
berikutnya mobil Sapuangin Speed 4 bisa tampil dengan baik.
Dalam tugas akhir ini, dilakukan analisa tentang perilaku arah kendaraan pada mobil formula Sapuangin Speed 3 dengan variasi posisi titik berat dan kecepatan di lintasan skid pad. Pada awalnya, menentukan posisi titik berat untuk dianalisa, kemudian menghitung gaya-gaya yang terjadi pada ban yang mampu mempengaruhi perilaku arah pada kendaraan, lalu divariasikan dengan kecepatan tertentu hingga mampu memperoleh waktu yang optimal. Sedangkan pada steering system yaitu meneliti sudut belok agar mencapai kondisi ideal (Ackermann).
Dari penelitian yang telah dilakukan, diperoleh posisi titik berat yang optimal yaitu tepat ditengah (50% : 50%) dengan Kus 0,0678 pada radius 8,982 m. Kemudian dari analisa skid kendaraan mengalami understeer pada yaw rate sebesar 2,2677. Dari analisa steering kendaraan bahwa sistem steering mobil Sapuangin Speed 3 tidak Ackermann, namun sistem steering ini sudah mendekati Ackerman
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In 2015, ITS Team Sapuangin for the third time following the Japan Formula Student competition held by the Japan Society of Automotive Enginee (JSAE). In this competition each team is required to follow the dynamic events in the race, including acceleration, skid-pad, autocross and endurance. Target Team Sapuangin which won the skid-pad, because the car Sapuangin Speed 4 have a engine with a small capacity compared with teams from other countries.. But in fact ITS Sapuangin Team was only able to complete skid-pad with time 5.73 seconds. In this race, TU Graz is a team that managed to win the race this pad with skid-5.03 time seconds. The constraints experienced by Sapuangin Speed 3 is difficult to control and experience understeer or oversteer. With the condition of the vehicle is difficult to predict as it is, the driver must always perform a correction, so it is difficult to get a good close time. This problem will be trying analyzed the cause so that the following year the car Sapuangin Speed 4 can perform well.
In this final task, carried out the analysis of behaviour of the vehicle in the direction of formula Sapuangin 3 Speed
with a variation of the position of the point of weight and speed on the skid-pad. At first, determine the position of the point of weight to be analyzed, and then calculating the forces that occur on the tires that are able to affect the behavior of the direction of the vehicle, and then varied with the given speed until able to obtain optimal time. While in the steering system that examines turn the corner in order to achieve ideal conditions (Ackermann).
From the research that has been done, obtained optimal position of center of gravity is right in the middle (50% to 50%) with a radius Kus 0,0678 at 8,982 m. Then from the analysis of the vehicle skid experiencing understeer on the yaw rate of 2,2677. From the analysis that the vehicle steering system of a car steering Sapuangin Speed 3 Ackermann did not, but the system is already approaching Ackermann steering
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSM 629.228 Pra a-1 |
| Uncontrolled Keywords: | sapuangin speed 3, analisa skid, analisa slip, analisa guling, kecepatan maksimum, oversteer, understeer, waktu optimum, skid pad |
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL214 Automobiles--Motors--Pistons and piston rings. T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL214.T87 Automobiles--Motors--Turbochargers T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL257.5 Automobiles--Shock absorbers--Design and construction. T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL270 Automobiles--Wheels--Alignment. |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 01 Jul 2020 01:00 |
| Last Modified: | 01 Jul 2020 01:00 |
| URI: | http://repository.its.ac.id/id/eprint/76267 |
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