41. Tire

Figure 41.1 Tire example

About the Coordinate Systems

Figure 41.2 Coordinate system for the tire toolkit

A tire force must be modeled in the coordinate system defined in Figure 41.2. Therefore, the tire body and tire force must be created in the X-Z plane.

• 41.1. GTire Group
  • 41.1.1. Properties
  • 41.1.2. GTire(Generic Tire)
    • 41.1.2.1. Tire Property File
      • 41.1.2.1.1. UATire Property File
      • 41.1.2.1.2. USER Tire Property File
      • 41.1.2.1.3. MFTire Property File
      • 41.1.2.1.4. FTire Property File
    • 41.1.2.2. Result
    • 41.1.2.3. Use other Tires
  • 41.1.3. GRoad
    • 41.1.3.1. GRoad Modeling
      • 41.1.3.1.1. Create Method using the .rdf file
      • 41.1.3.1.2. Create Method using the Geometry (UATire)
    • 41.1.3.2. Road Property File
      • 41.1.3.2.1. UATire
      • 41.1.3.2.2. MFTire and SWIFTTire
      • 41.1.3.2.3. FTire
• 41.2. Tire Group
  • 41.2.1. Tire Kinematics
  • 41.2.2. Slip Ratio & Friction
    • 41.2.2.1. Longitudinal Slip Ratio
    • 41.2.2.2. Lateral Slip Ratios
    • 41.2.2.3. Comprehensive Slip Ratio
    • 41.2.2.4. Friction Models in the TIRE Statement
  • 41.2.3. Fiala Tire Model
    • 41.2.3.1. Normal Force of Tire
    • 41.2.3.2. Longitudinal force
    • 41.2.3.3. Lateral force
    • 41.2.3.4. Rolling Resistance Moment
    • 41.2.3.5. Aligning Moment
  • 41.2.4. UATire Model
    • 41.2.4.1. Force Analysis
      • 41.2.4.1.1. Case I.
      • 41.2.4.1.2. Case II.
      • 41.2.4.1.3. Case III.
    • 41.2.4.2. Tire forces and Moments in the Contact Coordinate System
  • 41.2.5. Contact
  • 41.2.6. Ground
    • 41.2.6.1. Solid Contact
  • 41.2.7. Tire Property File Format
    • 41.2.7.1. EXAMPLE
• 41.3. MFTire Group
  • 41.3.1. MFTire
  • 41.3.2. MFSwift
  • 41.3.3. Property
  • 41.3.4. Axis systems and units
  • 41.3.5. Outputs
  • 41.3.6. Tire Property File
  • 41.3.7. Road Data File
  • 41.3.8. Modeling Tips
    • 41.3.8.1. Center Marker of Tire Body
    • 41.3.8.2. Mass and Inertia of Tire Body
    • 41.3.8.3. Initial velocities of Tire Body
    • 41.3.8.4. Wheel Carrier Marker
    • 41.3.8.5. Moving Ground
    • 41.3.8.6. Demo models and example files