Road Friction
(Standard Interface) Simulate -> Full-Vehicle Analysis -> Driveline Tests -> Road Friction
Defines a variable friction coefficient for the tires. The friction expression could have an expression you define or a preformatted expression with three values: initial, intermediate, and final. If you use a preformatted expression, you can select if you want to use the time or the traveled distance as the independent variable for the expression, and the friction will pass from the initial to the intermediate value and from the intermediate to the final value using a STEP5 function.
For the option: | Do the following: |
|---|---|
Wheel Subsystem | Select the ride tire subsystem to which you want to assign a variable friction expression. |
Define Friction for | Select the left or right tire of the subsystem. |
Time Based | Select the time as the independent variable for the friction coefficient expression. |
Distance Based | Select the traveled distance as the independent variable for the friction coefficient expression. |
Initial Friction | Specify the initial value of the friction coefficient. |
Intermediate Friction | Specify the intermediate value of the friction coefficient. |
Final Friction | Specify the final value of the friction coefficient. |
Define Explicit Function | Select to specify your own friction function expression. |
If you select Define Explicit Function, Adams Driveline enables the following option: | |
Function Expression | Specify your own friction function expression. |
 | Select to use the Function or Expression Builder to define a function. For information on the Function or Expression Builder, see Function Builder. |
Set parameters | Apply the friction values to the selected subsystem. |
If you select Time Based, Adams Driveline displays the following options: | |
Time 1 | Specify the initial distance. In this phase, the friction will keep the initial value. |
Delta 1 | Specify the delta value during which the friction will pass from the initial to the intermediate value. |
Time 2 | Specify the second distance. In this phase, the friction will keep the intermediate value. |
Delta 2 | Specify the delta value during which the friction will pass from the intermediate to the final value. |
If you select Distance Based, Adams Driveline displays the following options: | |
Distance 1 | Specify the initial distance. In this phase, the friction will keep the initial value. |
Delta 1 | Specify the delta value during which the friction will pass from the initial to the intermediate value. |
Distance 2 | Specify the second distance. In this phase, the friction will keep the intermediate value. |
Delta 2 | Specify the delta value during which the friction will pass from the intermediate to the final value. |