three-axle vehicle body model

Hi all

I want to know how Vehicle Body 3DOF Three Axles block calculates Fzf, Fzm, Fzr, the normal force applied to front middle and rear wheels, along vehicle-fixed z-axis

Vehicle Body 3DOF two Axles block use this equations to calculate Fzf, Fzr

please help!

Answer 1

[Sulaymon Eshkabilov]

The equations are self-explanatory. As one can see that the forces are computed from the acceleration and velocity components along x and y axes, and constants, viz. mass, gravitational acceleration, distances between axles, distance between CG and road, etc.

The acceleration and velocity components along x and y axes are computed and are input signals coming into this block.

[Chen Jiayi]

when Axles block's WhlAngF is set to 0, the FzR is 0, why?