Home
Back
Slip Ratio Formula:
| From: | To: |
Slip Ratio is the ratio of the difference between the tire's rotational speed and its translational speed to its translational speed in tire behavior. It's a crucial parameter in vehicle dynamics and tire performance analysis.
The calculator uses the Slip Ratio formula:
Where:
Explanation: The slip ratio quantifies the relative difference between the actual rotational speed of a driven or braked wheel and the rotational speed it would have if it were freely rolling.
Details: Accurate slip ratio calculation is essential for optimizing vehicle traction, braking performance, and stability control systems. It helps in understanding tire-road interaction and maximizing grip in various driving conditions.
Tips: Enter both angular velocity values in radians per second. Both values must be positive and greater than zero for accurate calculation.
Q1: What does a positive slip ratio indicate?
A: A positive slip ratio typically indicates wheel spin during acceleration, where the driven wheel rotates faster than it would in free rolling conditions.
Q2: What does a negative slip ratio indicate?
A: A negative slip ratio usually indicates wheel lock during braking, where the braked wheel rotates slower than it would in free rolling conditions.
Q3: What is the ideal slip ratio for maximum traction?
A: The ideal slip ratio varies by tire and surface conditions, but typically falls between 10-20% for maximum acceleration traction and around -10% to -20% for maximum braking efficiency.
Q4: How is slip ratio used in vehicle control systems?
A: Anti-lock braking systems (ABS) and traction control systems (TCS) use slip ratio measurements to prevent wheel lock-up during braking and wheel spin during acceleration, respectively.
Q5: Can slip ratio be greater than 1?
A: Yes, slip ratio can exceed 1, particularly during aggressive acceleration where the driven wheel rotates significantly faster than the free-rolling condition would allow.