Full Brake Calculation

Full Brake Calculation

1. Static Load Load Distribution istribution

y

= Mr /M

2. Relativ Relativee Centr  Centr e of Gravit Gravity y X = h/W h/Wb 3. Dynamic Dynamic Load Load

4.

Brak  rak ing

rake Brake

= 741/ 741/1850 = 0.400

  = [ (1-0.667) + ( .400*.6) ] 1800 Mf dynamic ynamic =      = 1031 kg

Bf  Forc Forcee = Ma*g = 1800*0.6*9.81 = 10594.8 N fo for 3 r  3 wheels wheels For  For Si Single ngle wheel = 3531.3 N

5. Wheel Loc Lock

6.

= 1200/ 1200/1800 = 0.667

Torqu Torquee

Fa

= Mwdynamics ynamics*g*µr 

T

= (BFw*R)/r  *R)/r 

= 1032*9.81*0.5 = 5061.96 N for  for  f r  r ont ont wheel. = (3531*0.2205)/ (3531*0.2205)/0.9 = 778.58 N-m N-m

Centre Of Gravity: 1. Centr  Centr e of Gravit Gravity y f r  r o m behi ehind the f r  r ont ont wheels wheels CGwb CGwb = (Rw/ (Rw/Tw)*W Tw)*WB = (1200/ (1200/1800)*1850 = 1233.33mm 1233.33mm 2. Centr  Centr e of Gravit Gravity y Fr  Fr om lef t side side of trac of track k widt width h CGtr  CGtr w = (R tw/Tw)*Tr  Tw)*Tr w =(900/ =(900/1800)*1156 = 578 mm 3. Centr  Centr e of Gravit Gravity y hei height ght is assume assumed that 2/3 form form top of t of the vehic ehicle le = 741 mm