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example.tir
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[MDI_HEADER]
FILE_TYPE ='tir'
FILE_VERSION = 3.0
FILE_FORMAT ='ASCII'
! : TIRE_VERSION : PAC2002
! : COMMENT : Stackpole Engineering Services, Inc.
! : COMMENT : Created By : Melissa Patterson
! : COMMENT : August 31, 2012
! : COMMENT : Customer : FSAE
! : COMMENT : Construction : 20.5x7-13
! : COMMENT : DOT : XXXXXX
! : COMMENT : Position : All
! : COMMENT : Manufacturer : Hoosier
! : COMMENT : Nom. section width(in) 8.00
! : COMMENT : Nom. aspect ratio 0.536
! : COMMENT : Infl. pressure (Psi) 14.0
! : COMMENT : Rim Diameter (in) 13.0
! : COMMENT : Rim Width (in) 7.0
! : COMMENT : Test speed (mph) 25.0
! : FILE FORMAT : ASCII
!
! USE_MODE specifies the type of calculation performed:
! 0: Fz only, no Magic Formula evaluation
! 1: Fx,My only
! 2: Fy,Mx,Mz only
! 3: Fx,Fy,Mx,My,Mz uncombined force/moment calculation
! 4: Fx,Fy,Mx,My,Mz combined force/moment calculation
! +10: including relaxation behavior
! *-1: mirroring of tyre characteristics
!
! example: USE_MODE = -12 implies:
! -calculation of Fy,Mx,Mz only
! -including relaxation effects
! -mirrored tyre characteristics
!
$----------------------------------------------------------------units
[UNITS]
LENGTH = 'meter'
FORCE = 'Newton'
ANGLE = 'radians'
MASS = 'kg'
TIME = 'second'
$-----------------------------------------------------------------model
[MODEL]
PROPERTY_FILE_FORMAT ='PAC2002'
USE_MODE = 14 $Tyre use switch (IUSED)
VXLOW = 1
LONGVL = 11.1760 $Measurement speed
TYRESIDE = 'RIGHT' $Mounted side of tyre at vehicle/test bench
$------------------------------------------------------------dimensions
[DIMENSION]
UNLOADED_RADIUS = 0.2600 $Free tyre radius
WIDTH = 0.2032 $Nominal section width of the tyre
ASPECT_RATIO = 0.5360 $Nominal aspect ratio
RIM_RADIUS = 0.1651 $Nominal rim radius
RIM_WIDTH = 0.1778 $Rim width
$----------------------------------------------------------------shape
[SHAPE]
{radial width}
1.0 0.0
1.0 0.4
1.0 0.9
0.9 1.0
$-------------------------------------------------------------parameter
[VERTICAL]
VERTICAL_STIFFNESS = 136942.00 $Tyre vertical stiffness
VERTICAL_DAMPING = 68471.0 $Tyre vertical damping
BREFF = 0.2600 $Low load stiffness e.r.r.
DREFF = 0.2500 $Peak value of e.r.r.
FREFF = 0.3000 $High load stiffness e.r.r.
FNOMIN = 670.3389 $Nominal wheel load
$------------------------------------------------------long_slip_range
[LONG_SLIP_RANGE]
KPUMIN = -0.5000 $Minimum valid wheel slip
KPUMAX = 0.5000 $Maximum valid wheel slip
$-----------------------------------------------------slip_angle_range
[SLIP_ANGLE_RANGE]
ALPMIN = -0.2094 $Minimum valid slip angle
ALPMAX = 0.2094 $Maximum valid slip angle
$-----------------------------------------------inclination_slip_range
[INCLINATION_ANGLE_RANGE]
CAMMIN = 0.0000 $Minimum valid camber angle
CAMMAX = 0.0698 $Maximum valid camber angle
$-------------------------------------------------vertical_force_range
[VERTICAL_FORCE_RANGE]
FZMIN = 222.4 $Minimum allowed wheel load
FZMAX = 1556.8 $Maximum allowed wheel load
$--------------------------------------------------------------scaling
[SCALING_COEFFICIENTS]
LFZO = 1.0 $Scale factor of nominal (rated) load
LCX = 1.0 $Scale factor of Fx shape factor
LMUX = 1.0 $Scale factor of Fx peak friction coefficient
LEX = 1.0 $Scale factor of Fx curvature factor
LKX = 1.0 $Scale factor of Fx slip stiffness
LHX = 1.0 $Scale factor of Fx horizontal shift
LVX = 1.0 $Scale factor of Fx vertical shift
LGAX = 1.0 $Scale factor of camber for Fx
LCY = 1.0 $Scale factor of Fy shape factor
LMUY = 1.0 $Scale factor of Fy peak friction coefficient
LEY = 1.0 $Scale factor of Fy curvature factor
LKY = 1.0 $Scale factor of Fy cornering stiffness
LHY = 1.0 $Scale factor of Fy horizontal shift
LVY = 1.0 $Scale factor of Fy vertical shift
LGAY = 1.0 $Scale factor of camber for Fy
LTR = 1.0 $Scale factor of peak of pneumatic trail
LRES = 1.0 $Scale factor for offset of residual torque
LGAZ = 1.0 $Scale factor of camber for Mz
LXAL = 1.0 $Scale factor of alpha influence on Fx
LYKA = 1.0 $Scale factor of alpha influence on Fx
LVYKA = 1.0 $Scale factor of kappa induced Fy
LS = 1.0 $Scale factor of moment arm of Fx
LSGKP = 1.0 $Scale factor of relaxation length of Fx
LSGAL = 1.0 $Scale factor of relaxation length of Fy
LGYR = 1.0 $Scale factor of gyroscopic torque
LMX = 1.0 $Scale factor of overturning couple
LVMX = 1.0 $Scale factor of Mx vertical shift
LMY = 1.0 $Scale factor of rolling resistance torque
$--------------------------------------------------------LONGITUDINAL_FORCE
[LONGITUDINAL_COEFFICIENTS]
PCX1 = 2.10953490E+00 $Shape factor Cfx for longitudinal force
PDX1 = -2.47876800E+00 $Longitudinal friction Mux at Fznom
PDX2 = 2.48727710E-01 $Variation of friction Mux with load
PDX3 = 6.25547010E+00 $Variation of friction Mux with camber
PEX1 = 1.43136510E+00 $Longitudinal curvature Efx at Fznom
PEX2 = 3.98108250E-17 $Variation of curvature Efx with load
PEX3 = 1.65885370E-16 $Variation of curvature Efx with load squared
PEX4 = -5.60690810E-03 $Factor in curvature Efx while driving
PKX1 = 5.98871090E+01 $Longitudinal slip stiffness Kfx/Fz at Fznom
PKX2 = 1.97427160E+01 $Variation of slip stiffness Kfx/Fz with load
PKX3 = -4.37428840E-01 $Exponent in slip stiffness Kfx/Fz with load
PHX1 = 1.11550700E-02 $Horizontal shift Shx at Fznom
PHX2 = 1.72973630E-02 $Variation of shift Shx with load
PVX1 = -1.25209490E-02 $Vertical shift Svx/Fz at Fznom
PVX2 = -2.98263870E-02 $Variation of shift Svx/Fz with load
RBX1 = 1.36530910E+04 $Slope factor for combined slip Fx reduction
RBX2 = -8.35771650E+01 $Variation of slope Fx reduction with kappa
RCX1 = 1.16694720E+00 $Shape factor for combined slip Fx reduction
REX1 = 9.98726140E-01 $Curvature factor of combined Fx
REX2 = -2.49550260E-03 $Curvature factor of combined Fx with load
RHX1 = -3.98701010E-02 $Shift factor for combined slip Fx reduction
PTX1 = 0.00000000E+00 $Relaxation length SigKap0/Fz at Fznom
PTX2 = 0.00000000E+00 $Variation of SigKap0/Fz with load
PTX3 = 0.00000000E+00 $Variation of SigKap0/Fz with exponent of load
$--------------------------------------------------------OVERTURNING_MOMENT
[OVERTURNING_COEFFICIENTS]
QSX1 = 1.34281090E-02 $Lateral force induced overturning moment
QSX2 = 1.30204580E+00 $Camber induced overturning couple
QSX3 = 2.76889390E-02 $Fy induced overturning couple
$-------------------------------------------------------------LATERAL_FORCE
[LATERAL_COEFFICIENTS]
PCY1 = 1.70000000E+00 $Shape factor Cfy for lateral forces
PDY1 = -2.82296020E+00 $Lateral friction Muy
PDY2 = 1.91162390E-01 $Variation of friction Muy with load
PDY3 = 1.12864140E+01 $Variation of friction Muy with squared camber
PEY1 = 1.45305200E+00 $Lateral curvature Efy at Fznom
PEY2 = -7.28245160E-03 $Variation of curvature Efy with load
PEY3 = 1.29982370E-02 $Zero order camber dependency of curvature Efy
PEY4 = 1.78004690E-01 $Variation of curvature Efy with camber
PKY1 = -1.26655290E+02 $Maximum value of stiffness Kfy/Fznom
PKY2 = 4.54537570E+00 $Load at which Kfy reaches maximum value
PKY3 = 1.34572030E+00 $Variation of Kfy/Fznom with camber
PHY1 = 1.98626370E-03 $Horizontal shift Shy at Fznom
PHY2 = 3.30833890E-03 $Variation of shift Shy with load
PHY3 = 1.30012390E-01 $Variation of shift Shy with camber
PVY1 = 5.43414820E-02 $Vertical shift in Svy/Fz at Fznom
PVY2 = 3.01602750E-02 $Variation of shift Svy/Fz with load
PVY3 = 1.53185420E+00 $Variation of shift Svy/Fz with camber
PVY4 = -7.94527020E-01 $Variation of shift Svy/Fz with camber and load
RBY1 = 8.67943640E+01 $Slope factor for combined Fy reduction
RBY2 = -3.05938100E-01 $Variation of slope Fy reduction with alpha
RBY3 = -2.29231630E+01 $Shift term for alpha in slope Fy reduction
RCY1 = 9.85557320E-01 $Shape factor for combined Fy reduction
REY1 = -6.07319070E-02 $Curvature factor of combined Fy
REY2 = 9.09209780E-02 $Curvature factor of combined Fy with load
RHY1 = 3.50884020E-02 $Shift factor for combined Fy reduction
RHY2 = -1.19989540E-02 $Shift factor for combined Fy reduction with load
RVY1 = -1.10186910E-01 $Kappa induced side force Svyk/Muy*Fz at Fznom
RVY2 = 1.01050900E+00 $Variation of Svyk/Muy*Fz with load
RVY3 = -6.47672710E+00 $Variation of Svyk/Muy*Fz with camber
RVY4 = -7.01567070E+01 $Variation of Svyk/Muy*Fz with alpha
RVY5 = 1.76251990E-01 $Variation of Svyk/Muy*Fz with kappa
RVY6 = -6.31127480E+01 $Variation of Svyk/Muy*Fz with atan (kappa)
PTY1 = 0.00000000E+00 $Peak value of relaxation length SigAlp0/R0
PTY2 = 0.00000000E+00 $Value of Fz/Fznom where SigAlp0 is extreme
$------------------------------------------------------ROLLING_COEFFICIENTS
[ROLLING_COEFFICIENTS]
QSY1 = 0.00000000E+00 $Rolling resistance torque coefficien)
QSY2 = 0.00000000E+00 $Rolling resistance torque depending on Fx
QSY3 = 0.00000000E+00 $Rolling resistance torque depending on speed
QSY3 = 0.00000000E+00 $Rolling resistance torque depending on speed ^4
$----------------------------------------------------------ALIGNING_TORQUE
[ALIGNING_COEFFICIENTS]
QBZ1 = 7.54666930E+00 $Trail slope factor for trail Bpt at Fznom
QBZ2 = 2.58236300E+00 $Variation of slope Bpt with load
QBZ3 = -2.76671030E-01 $Variation of slope Bpt with load squared
QBZ4 = -5.12495610E-01 $Variation of slope Bpt with camber
QBZ5 = -1.09271320E+00 $Variation of slope Bpt with absolute camber
QBZ9 = -6.94559040E-02 $Slope factor Br of residual torque Mzr
QBZ10 = -2.23860740E-04 $Slope factor Br of residual torque Mzr
QCZ1 = 1.13602850E+00 $Shape factor Cpt for pneumatic trail
QDZ1 = 8.37369080E-02 $Peak trail Dpt" = Dpt*(Fz/Fznom*R0)
QDZ2 = -1.15079390E-02 $Variation of peak Dpt" with load
QDZ3 = -1.04325370E+00 $Variation of peak Dpt" with camber
QDZ4 = -9.28196240E-02 $Variation of peak Dpt" with camber squared
QDZ6 = -4.84342290E-02 $Peak residual torque Dmr" = Dmr/(Fz*R0)
QDZ7 = -1.57487450E-02 $Variation of peak factor Dmr" with load
QDZ8 = -3.11839120E-02 $Variation of peak factor Dmr" with camber
QDZ9 = -7.64535700E-03 $Variation of peak factor Dmr" with camber and load
QEZ1 = -9.99119760E+00 $Trail curvature Ept at Fznom
QEZ2 = 8.62402380E+00 $Variation of curvature Ept with load
QEZ3 = -2.26378870E+00 $Variation of curvature Ept with load squared
QEZ4 = -8.29727760E-01 $Variation of curvature Ept with sign of Alpha-t
QEZ5 = 8.93471990E+00 $Variation of Ept with camber and sign Alpha-t
QHZ1 = -8.36814200E-03 $Trail horizontal shift Sht at Fznom
QHZ2 = -3.22686130E-03 $Variation of shift Sht with load
QHZ3 = 2.43182460E-02 $Variation of shift Sht with camber
QHZ4 = 4.50686490E-02 $Variation of shift Sht with camber and load
SSZ1 = 0.00000 $Nominal value of s/R0: effect of Fx on Mz
SSZ2 = 0.00000 $Variation of distance s/R0 with Fy/Fznom
SSZ3 = 0.00000 $Variation of distance s/R0 with camber
SSZ4 = 0.00000 $Variation of distance s/R0 with load and camber
QTZ1 = 0 $Gyration torque constant
MBELT = 0 $Belt mass of the wheel