team ecb racers presentation baja
TRANSCRIPT
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Team ECB Racers
Engineering College Bikaner(AN AUTONOMUS INSTITUTE OF GOV. OF RAJASTHAN)
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Our Goals
To design a vehicle which is low cost, low weight, fun todrive , easy to maintain & ecofriendly in accordance with the
BAJASAE rules.
To design a vehicle which can negotiate through all terrains
and able to withstand worst conditions.
To design a vehicle to provide maximum comfort level to itsrider in vehicle handling during off road traversal.
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Vehicle technical specifications
Overall dimensions:overall length : 90 in. Overall height : 60 in.
ground clearance : 8 in. Track width : 52 in.
Braking system:
dual hydraulic disc brakes at both front and rear wheels.Steering :
type : central rack and roller pinion
steering ratio : 10.58:1 turning radius : 9 ft.
Tires and wheels: (in inches)front : 21x10x6
rear : 22x10x8
Suspensions:
double wishbone at both front and rear.
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Target design and performance specifications
Speed:For better economy, the range of speed in each gear, for driving tires of O.D 22 inches operated
in normal forward orientation is:
braking performance:
Time to come in the rest from position of maximum speed : 8 sec.
Distance covered by the vehicle before coming to rest from maximum speed when
the brakes are applied : 11 mtr.
Gear Speed (km/hr)
First 10-12
Second 15-18
Third 25-33
Fourth 40-51
Reverse 8-11
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Roll Cage Design
Objective:
Roll cage Specifications: Roll Cage View:
Safety of the
Driver
Ease offabrication &
manufacture
Stability of themounting
components
Driver
Ergonomics
Roll over
Prevention
Aerodynamicstability
Cost & Quality Low WeightOverall
Attractiveness
Durability &Maintainability
of the Frame
LENGTH 90in
WIDTH FRONT END 22in
REAR END 25in
MAX 37in
HEIGHT 52in
WEIGHT 43kg
VOLUME 333095.40 in3
SURFACE AREA 6958.53 in2
CENTRE OF MASS x=2.95mm
y=465.99mm
z=381.54mm
WELD JOINTS 52
TOTAL WELD LENGTH
261.48in
ESTIMATED COST 8400 Rs
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FEA ANALYSIS
Impact Factors & load Applied:
Front impact:
Front impact Test-Displacement Front impact Test-F actor of Safety
Max. Displacement:1.50mm Min. FOS: 2.01
Impact Impact factors Load Applied Result
Front Impact At 15 m/s 6000N Passed
Side Impact At 11m/s 4000N Passed
Rear Impact At 13 m/s 5000N Passed
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Side Impact:
Side Impact Test- Displacement Side Impact Test- FOS
Max. Displacement-5.4 mm Min. FOS -3.21
Rear Impact
Rear Impact Test- Displacement Rear Impact Test- FOS
Max. Displacement-7.463mm Min. FOS-1.91
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Material selection
Availability of Material as per Rulebook:
1.AISI 1018 2.AISI 1020
3.IS 1239 (part 1) 4.AISI 4130
Comparison of materials:Cost of per meter length of 1018 is
3.6 and 1.275 times cheaper than
4130 and IS 1239 respectively. Also
Its easily available in market.
Conclusions:The material we are going to use is
AISI 1018 steel.
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MS Project plan
Here is a brief description of the project plan team ECB racers going to follow:
Name of the job period
Roll cage prototype 25 Jul. - 5 Aug.
Raw material collection 6 Aug. - 10 Aug.
Rollcage fabrication 11 Aug-25 Aug
Steering fabrication 26 Aug-18Sep
Engine mounting 19Sep-25Sep
Wheel assembling 26Sep-7Oct
Riders accessories 8Oct-20Oct
Vehicle Testing 20Oct-30Oct
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Design validation plan
ROLLCAGE ANALYSIS :
*FRONT IMPACT : (AT 15m/s) as per FSAE Society Rules:
=> F=360*15=5400N&Thus Force applied is 6000N.
*SIDE IMPACT: (AT 11m/s)=> F=360*11=3960N&Force applied is 4000N
*REAR IMPACT: (AT 13m/s)=> F=360*13=4680&Force applied is 5000NFORCE ON AXELS(WHEN BREAK APPLIED)
FRONT AXEL = 1800N
REAR AXEL = 1200N
ACCELERATION= 9.1M/S2
Suspension:Mass falling over front wheels=76.5Kg
Mass falling over rear wheels=138.5Kg
Max. Compression at front suspensions = 20mm
Max. compression at rear suspensions = 25mm (under static conditions).
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Innovations
A touch screen GPS system with quick satellite viewer
enabling to have a view of vehicle position and a live picture
of surface around the vehicle also with weather information
plus information regarding other vehicles also.
For cooling of the Engine, we are going to use funnel with
tubes to focus air directly to the areas of engine where
cooling is required.
Using the iPhone to start/stop the vehicle engine via start
smart hardware in the vehicle(range ).
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Go green
Mounting the Enamel coated plate at the exhaust of theengine to decompose and reduce the emission of carbon
containing gases.
75% material of vehicle parts are recyclable .
HID headlights(Xenon) instead of mercury lights.
Paints that we are going to use would be lead free.
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Team detailsTeam member Task
Prof. M.P.Poonia Faculty adviser
Pushpendra Kumar Sharma Marketing, suspensionPrabhakar pal Brakes, co-captain
Priyank shastri Transmission, marketing
Jagrat Agar Roll cage design
Adarsh Maurya Roll cage design
Dinesh Chand gangawal Roll cage design
Harshit sharma Suspension
Himani jangid Braking system
Tanushree pareek Vehicle accessories
Dharmraj meena Ignition System
Mukesh pathak Accessories
Divya suman Tires & wheels
Sanu pal Steering system
Harish Fabrication & Mounting.
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College facilities to be used
We are going to use :
CUTTER MACHINE
DRILLING MACHINE
GRINDER MACHINE
MIG WELDING &
LATHE MACHINE.
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