Ash Shiddieqy, Rizaldy Hakim (2015) Analisa Kekuatan Chassis Mobil Listrik “Braja Wahana” Chassis Hollow Dengan Variasi Ketebalan. Undergraduate thesis, Institut Teknology Sepuluh Nopember.
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Abstract
Pengembangan Molina (Mobil Listrik Nasional)
melibatkan beberapa perguruan tinggi nasional, salah satunya
ITS. Dalam proses pengembangan Molina oleh ITS, dengan nama
Braja Wahana, diawali dengan proses perancangan dan
penelitian. Proses perancangan dan penelitian Braja Wahana,
terdapat beberapa parameter penting, antara lain daya motor
listrik, transmisi daya dari motor listrik ke roda, stabilitas
kendaraan, center of gravity, dan reliability mobil listrik. Mobil
harus dalam kondisi stabil ketika akselerasi, deselerasi, maupun
saat belok. Kestabilan kendaraan berhubungan dengan kekuatan
dari chassis yang dapat disimulasikan dengan parameter
tegangan Von-Mises, safety factor, dan deformasi. Selain analisa
tersebut, nantinya juga didapatka blue print chassis dari Braja
Wahana.
Dalam tugas akhir ini, prosedur penelitian dilakukan
dengan beberapa tahapan yang dimulai dengan melakukan
analisa-analisa dengan sumber literatur buku jurnal, dan
penelitian sebelum-sebelumnya. Tahap selanjutnya pengumpulan
data-data teknis untuk perhitungan beban dan penentuan
kokoordinat pembebanan yang selanjutnya dilanjutkan pada
tahap simulasi. Geometri desain dari software CAD di masukkan
ke software simulasi. Selanjutnya dilakukan meshing untuk
ii
memecah geometri menjadi bentuk-bentuk kecil, kemudian
penentuan Constraint atau boundary condition sebagai titik
tumpu dari chassis. Tahap selanjutnya dimasukkan pembebanan
pada kokoordinat-kokoordinat yang sudah dihitung.
Kemudian didapatkan hasil simulasi berupa tegangan
Von-Mises, safety factor dan deformasi. Pada simulasi chassis
dengan ketebalan 1.2 mm didapat nilai tegangan Von-Mises dan
deformasi maksimum serta nilai safety factor terkecil pada
pembebanan vertikal sebesar 58.95 MPa, 0.69 mm dan 5.85,
pembebanan akibat belok sebesar 206.47 MPa, 1.61 mm dan
1.67, pembebanan akibat akselerasi sebesar 112.32 MPa, 1.4 mm
dan 3.07 dan pembebanan akibat pengereman 143.68 MPa, 2.3
mm dan 2.40. Sedangkan chassis dengan ketebalan 1 mm didapat
nilai tegangan Von-Mises dan deformasi maksimum serta nilai
safety factor terkecil pada pembebanan vertikal sebesar 147.34
MPa, 1.06 mm dan 2.34, pembebanan akibat belok sebesar
503.48 MPa, 0.69 mm, dan 0.68, pembebanan akibat akselerasi
sebesar 273.68 MPa, 1.94 mm, dan 1.26 dan pembebanan akibat
pengereman 283.24 MPa, 4.01 mm, dan 1.21. Chassis dengan
ketebalan 1 mm memiliki tegangan Von-Mises maksimum diatas
batas yieldnya dan nilai safety factor dibawah safety factor yang
diizinkan Oleh karena itu, chassis dengan ketebalan 1 mm tidak
aman untuk digunakan.
=======================================================================================================
The development of Molina as a National Electric
Vehicle has been involving several state universities,
including ITS. The proccess of Molina’s development by
ITS, named as Braja Wahana, starts with designing
proccess and researches. There are severeal important
parameters that affect the car performance on the road.
Some of them are power electric motors, power
transmission from the electric motor to the wheels, vehicle
stability, center of gravity, and reliability of electric cars.
Vehicle stability is the most important part when a car drove
up the street. Vehicle stability is the most important part a
car drove up the street. The car must be in stable condition
when accelerates, decelerates or changing direction.Vehicle
stability can know with the results of simulation. The results
of simulation are Von-Mises stress, safety factor, and
deformation.
In this thesis, the research procedure performed with
several stages begins with analysis sourced from journal
literature, and recent researches. The next stage is
iv
collecting technical data for the calculation of loads and
determination of cokoordinates of the next loading resumed
in the simulation phase. Geometry design of CAD software
incorporated into the simulation software. Furthermore,
meshing is applied to divide the geometry into small forms,
then the determination of constraint or boundary condition
as the support of the chassis. The next stage is to enter the
loads on the cokoordinates that have been calculated.
Von Mises, deformation, and Safety factor are the
result of this simulation. In the simulated chassis with a
thickness of 1.2 mm, Von Mises and total deformation
maximum stress obtained, with the smallest safety factor
value in the vertical loading of 58.95 MPa, 0.69 mm and
5.85, loading due to turn of 206.47 MPa, 1.61 mm and 1.67,
loading due to acceleration of 112.32 MPa, 1.4 mm and
3.07 and loading due to braking 143.68 MPa, 2.3 mm and
2.40. While the chassis with a thickness of 1 mm obtained a
maximum value of Von-Mises stress and the value of safety
factor at the smallest vertical loading of 147.34 MPa, 1.06
mm and 2.34, loading due to turn of 503.48 MPa, 2.53 mm
and 0.68, loading due to acceleration of 273.68 MPa, 1.94
mm and 1.26 and loading due to braking 283.24 MPa, 1.22
mm and 1.21. Chassis with a thickness of 1 mm with a
maximum Von Mises stress and the smallest safety factor
value only occurs in certain areas only. Therefore, a chassis
with a thickness of 1 mm is not safe to use.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSM 629.24 Ash a |
| Uncontrolled Keywords: | kekuatan, Braja Wahana, pembebanan, simulasi |
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 04 Dec 2019 02:03 |
| Last Modified: | 04 Dec 2019 02:03 |
| URI: | http://repository.its.ac.id/id/eprint/72179 |
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