10 Technical data 10.6 Frame structure - Mitsubishi FUSO Trucks

9 Calculations
9.2.1 Method of calculating the weight
distribution on the front two axles
Front suspension with equalizer
The axle load on each of the two front axles can be
calculated by means of the following equations:
First front axle load = Total weight of the front two
axles/2
Second front axle load = Total weight of the front two
axles/2
Front suspension without equalizer
The front axle is divided into two axles which are
constructed in such a way that each axle bears a load
independently of the other. For this reason, the weight
above the spring is supported at three points, and it is
not possible to obtain the weight distribution of each
axle by static balance alone. Accordingly, the weight
distribution is determined by additionally taking into
account the spring deflection of each axle. When
building the rear body, calculate the weight
distribution using the following procedure.
Empty vehicle
• Calculation of the moment around the center of the
front two axles of the rear body
M 2 = Moment around the center of the front two
axles of the rear body [N·m]
W 2 = Weight of the rear body [kg]
a 2 = Horizontal distance from the center of the front
two axles to the center of gravity of the rear
body [m]
i
M 2 = W 2 × a 2 × 9.80665 [N·m]
• Calculation of the weight and the moment around
the front two axles when the vehicle is empty
M 1 = Moment around the front two axles of the
chassis with the cab installed
W 1 = Weight of the chassis with the cab installed [kg]
a 1 = Horizontal distance from the center of the front
two axles to the center of gravity of the chassis
with the cab installed [m]
W = Weight of the empty vehicle [kg]
M = Moment around the front two axles when the
vehicle is empty [N·m]
M 1 = W 1 × a 1 × 9.80665 [N·m]
W = W 1 + W 2 [kg]
M = M 1 + M 2 [N·m]
9.2 Axle load calculation
MITSUBISHI FUSO body/equipment mounting directives for FP.FV.FS Issue date: 29. 07. 2011
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