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Vehicle Ride and Handling Tool

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Vehicle Ride and Handling

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This interactive tool allows the user to try various combinations of steer- and camber-by-roll coefficients for a 3 degree-of-freedom vehicle model, and observe the effect on the yaw gain curve and the value of the understeer coefficient, K[us].

 

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Mass and Inertia

 

Vehicle curb weight:                                kg

Total vehicle sprung mass weight :         kg

Unsprung weight per wheel, front:          kg

Unsprung weight per wheel, rear:            kg

Vehicle inertia about z axis:                    kg*m^2

Sprung mass inertial about x axis:           kg*m^2

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Geometries

 

Wheel base:                                         m

Track ( front and rear):                        m

Distance of CG from front axle (a):    m

Distance of CG from rear axle (b):     m

Vehicle CG height:                             m

Sprung mass CG height:                       m

Roll center height ( front/rear):             m

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Compliances

Tire cornering stiffness (front and rear): N/rad

Tire vertical stiffness:                              N/m 

Tire camber stiffness (front and rear):     N/rad 

Front shock absorber rate ( per wheel):   N/(m*s) 

Rear shock absorber rate ( per wheel):    N/(m*s) 

Distance between installation point of left and right springs

(front and rear):                                       m

Distance between installation point of Left and right shock absorber

(front and rear):                                       m

Installation factor for springs and shock absorbers for

front and rear wheels:                              m

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Requirements

First natural frequency of front suspension:  Hz         rad/s

First natural frequency of rear suspension:    Hz         rad/sNULL

Anti-roll-bar on front axle, Roll Gain:           deg/g

 

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Front Suspension Stiffness, `k__sF`= 

Rear Suspension Stiffness, `k__sR`=

Overall Torsional Stiffness, `K__t`= 

Overall Torsional Damping, `C__t`=

Anti Roll-Bar Torsional Stiffness, `K__ARB`= 

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Understeer/Oversteer Calculation, K__us

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K[SBRF]

K[SBRR]

K[CBRF]

K[CBRR]

 

K[us]

NULL  km/h   m/s

deg

seconds

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Simulation Results

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Legal Notice: © Maplesoft, a division of Waterloo Maple Inc. 2013. Maplesoft and Maple are trademarks of Waterloo Maple Inc. This application may contain errors and Maplesoft is not liable for any damages resulting from the use of this material. This application is intended for non-commercial, non-profit use only. Contact Maplesoft for permission if you wish to use this application in for-profit activities.

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