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Fiala
Fiala tire model used to determine the forces and moments developed at the tire contact patch
The Fiala tire model, introduced by E. Fiala and extended by the developers of MSC Adams, computes expressions for all tire forces and moments except for the overturning moment. The effects of inclination angle on tire forces are not included, nor are the effects of comprehensive slip during combined cornering, braking, and traction (that is, the lateral and longitudinal slip are treated independently). The Fiala tire model provides reasonable results for many maneuvers.
Note: The  port of the Fiala tire model must be connected directly to the  port of a tire body component, as shown in the diagram below.
Connections
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Name
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Description
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Color
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Tire reference frame, which must be connected to a tire body component
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Gray
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Parameters
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Symbol
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Default
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Units
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Description
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ID
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![C[rr]](/support/helpjp/helpview.aspx?si=3666/file09691/math159.png)
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.01
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-
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Rolling resistance moment coefficient
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Crr
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![C[long]](/support/helpjp/helpview.aspx?si=3666/file09691/math175.png)
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115000
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Longitudinal force coefficient
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Clong
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![C[lat]](/support/helpjp/helpview.aspx?si=3666/file09691/math191.png)
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117000
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Lateral force coefficient
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Clat
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![mu[1]](/support/helpjp/helpview.aspx?si=3666/file09691/math207.png)
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.2
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-
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Static coefficient of friction
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mu1
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![mu[2]](/support/helpjp/helpview.aspx?si=3666/file09691/math223.png)
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.75
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-
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Dynamic coefficient of friction
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mu2
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.16
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One half the tire width
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r2
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References
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1
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E. Fiala, "Seitenkraefte am Rollenden Luftreifen", VDI Zeitschrift, vol.96, 1954.
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2
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User's Manual, MSC.Adams 2005, Release 1. (MSC Adams is a registered trademark of MSC.Software Corporation).
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See Also
Linear, Calspan, Pacejka, User-defined, Standard Tire
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Download Help Document
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