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Calspan

Calspan tire model used to determine the forces and moments developed at the tire contact patch

 

 

The Calspan tire model, which is used in the Iltis vehicle model described in reference [1], computes expressions for the lateral force and aligning moment. The longitudinal force, rolling resistance moment, and overturning moment are assumed to be zero.  

 

Note: The hubFrame port of the Calspan component must be connected directly to the hubFrame port of a tire body component, as shown below.

 

 

Connections 

Name

Description

Color

hubFrame

Tire reference frame, which must be connected to a tire body component.

Gray

 

Parameters

Note: All units are assumed to be in SI unless otherwise noted.

Symbol

Default

Units

Description

ID

A0...4

2625,14.47,12930,2.29,18175

-

Lateral force coefficients

A0A4

AΩt

1

-

Lateral force coefficient

AWt

B1...4

0.0000464,0,1.216,2.1810-11

-

Friction coefficients

B1B4

SN

1.0274

-

Skid number ratio

SN

AF1...4

0.0000171,0.0000171,0

-

Friction coefficients

AF1AF3

 

References

"The Iltis Benchmark Problem Definition", in  Multibody Computer Codes in Vehicle System Dynamics, W. Kortum and R. Sharp, editors, Supplement to the Vehicle System Dynamics journal, Vol.22, Swets and Zeitlinger, 1993,  pp. 216-226.

See Also

Linear, Fiala, Pacejka, User-defined, Standard Tire 


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