Units Supported in Tire Property Files
Tire Property File
A tire property file specifies what kind of tire model Adams Tire should use. The tire property file contains the data that defines the tire's force and moment characteristics. The amount and kind of data varies according to the type of tire model you use. A STRING statement in the Adams dataset holds the name of the tire property file.
Road Property File
A road property file contains data that defines the road surface and coefficient of friction. The road can be flat or have a three-dimensional surface represented as triangular patches. A STRING statement in the Adams dataset provides the name of the road property file.
Units
The following tables list the valid choices for the parameters in the UNITS section of a tire property file. Note the following:
■You must enter the choices in single quotes, such as 'METER' for meter.
■The choices are case-insensitive. Therefore, 'MeTeR,' 'meter,' and 'METER' are all equivalent.
■The strings are limited to 12 characters and the minimum abbreviation is shown in the tables. So, for example, 'millisecond' is valid and is interpreted as 'MILLI.'
Note: | For some tire models, the [UNITS] section is not applied consistently to all tire parameters. The exceptions are the Magic Formula coefficients for the Pacejka '89 and '94 model and spline data for the 521 model, where the unit conversion factors have to be defined explicitly. |
Length Units
The unit: | Can be abbreviated: |
|---|
Kilometers | 'KM' |
Meters | 'METER' |
Centimeters | 'CM' |
Millimeters | 'MM' |
Miles | 'MILE' |
Feet | 'FOOT' |
Inches | 'IN' |
Time Units
The unit: | Can be abbreviated: |
|---|
Milliseconds | 'MILLI' |
Seconds | 'SEC' |
Minutes | 'MIN' |
Hours | 'HOUR' |
Angle Units
The units: | Can be abbreviated: |
|---|
Degree | 'DEG' |
Radian | 'RAD' |
Mass Units
The unit: | Can be abbreviated: |
|---|
Kilograms | 'KG' |
Grams | 'GRAM' |
Pound-Mass | 'POUND_MASS' |
Kilo-Pound-Mass | 'KPOUND_MASS' |
Slugs | 'SLUG' |
Ounce-mass | OUNCE_MASS' |
Force Units
The unit: | Can be abbreviated: |
|---|
Kilograms-Force | ‘KG_FORCE' |
Newtons | 'NEWTON' or 'N' |
Kilo-Newtons | 'KNEWTON' or 'KN' |
Pounds-force | 'POUND_FORCE' |
Kilo-Pound-Force | 'KPOUND_FORCE' |
Dynes (gram-cm/sec2) | ‘DYNE' |
Ounce-force | 'OUNCE_FORCE' |