luggage trolley design calculation
Post on 26-Aug-2014
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LUGGAGE TROLLEY DESIGN CALCULATIONGroup membersMUHAMMAD ZA’IMUDDIN AMIRUL HAKIMIKHWAN HADI
MOHD SHAHRINMOHAMAD HAFIZANMOHAMAD HAFIZAN
Stainless steel X10Cr13
Density,ρ = 7700
Material chosen
Major plate◦ Length, l = 0.4m◦ Width, w = 0.02m◦ Thickness, t = 0.005m◦ Volume, v = l × w × t
= 0.4m × 0.02m × 0.01m =
◦ Mass, m = v × ρ = )( 7700 )
= 0.616 kg◦ Total mass of two component = 2(0.616 kg)
= 1.232 kg
Base Component
Minor plate◦ Length, l = 0.3m◦ Width, w = 0.02m◦ Thickness, t = 0.01m◦ Volume, v = l × w × t
= 0.3m × 0.02m × 0.01m =◦ Mass, m = v × ρ
= ( )( 7700 ) = 0. 462 kg Total mass of two component = 2(0.462 kg) = 0.924 kg
Major pivot joint◦ Length, l = 0.73m◦ Width, w = 0.01m◦ Thickness, t = 0.005m◦ Volume, v = l × w × t
= 0.73m × 0.01m × 0.005m =
◦ Mass, m = v × ρ =( )( 7700 ) = 0.281 kg
◦ Total mass of two component = 2(0.281 kg) = 0.562 kg
Minor pivot joint◦ Length, l = 0.38m◦ Width, w = 0.01m◦ Thickness, t = 0.005m◦ Volume, v = l × w × t
= 0.38m × 0.01m × 0.005m =
◦ Mass, m = v × ρ = )( 7700 ) = 0.146 kg
◦ Total mass of two component = 2(0.146 kg) = 0.292 kg
For ,◦ Volume, v = Π( - )0.24 m
=◦ Mass, m = v × ρ
= ( )2700 =0.293 kg For ,
◦ Volume, v = Π( - )0.24 m =
◦ Mass, m = v × ρ = ( )2700 = 0.283 kg Total mass base component = 0.283 kg + 0.293 kg + 0.292 kg
0.562 kg + 0.924 kg + 1.232 kg = 3.586 kg
Handle Component H-component
◦ Volume, v = Π( - )0.4 m =
◦ Mass, m = v × ρ = ( )2700 = 0.4877 kg
◦ Total mass of two component = 2(0.487kg) = 0.974 kg
For ,◦ Volume, v = Π( - )0.24 m
=◦ Mass, m = v × ρ
= ( )2700 =0.293 kg For ,
◦ Volume, v = Π( - )0.24 m =
◦ Mass, m = v × ρ = ( )2700 = 0.283 kg Total mass of H-component = 0.283 kg + 0.293 kg + 0.974 kg = 1.55 kg
Volume, v = Π( - )0.45 m = Mass, m = v × ρ = ( )2700 = 0.535 kg Total mass of two component = 2(0.535kg) = 1.071 kg
Total mass of handle component = 1.071 kg + 1.55 kg
= 2.62 kg
Total mass overall component = 2.62 kg + 3.586 kg
= 6.206 kg
Estimate The Center Of The Gravity For The Trolley
In the calculation section, the first step to do is to find the chassis centre of gravity- CG.
The trolley CG will be determined from calculate reaction forces from the rear tyre.
Estimate the CG
Calculation
CG = 0.3906m
FREE BODY DIAGRAM OF THE TROLLEY
Reaction Force
Shear And Moment Diagram
Maximum moment = 104.31 Nm
Maximum Stress
Factor of Safety
The deflection at the base of the trolley were determine by using the finite element.
Design deflection
E=20,000MPa KQ=F
the deflection of the trolley
During the fabrication process some minor change had been done on the design that been calculated cause of
a) Lack of equipmentb) Hard to fabricatec) un stabile design
Fabrication proces
Fabrication process
Trolley Handle
Trolley tyre
Trolley body
Expand and compressed system at the trolley body
Milling process at the trolley body
Welding process at several joint
Unfinished yet trolley
That’s all folks
Q & A
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