- #31
dan_bighit
- 20
- 0
i think that's probably cracked it then
thanks
thanks
Caculating tractive force (i need a formula)
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SUMMARY
The discussion centers on calculating the total tractive resistance of a vehicle with a kerbside weight of 1360 kg, a rolling resistance of 140 N per 1000 kg, a frontal area of 2 m², and a drag coefficient of 0.025. The user seeks a formula to compute the total tractive force when traveling at 70 km/h on a level road. Key calculations include rolling resistance (190.4 N) and air resistance, which can be calculated using the formula F = -0.5 * k * ρ * A * v². The drag coefficient was initially miscalculated, leading to confusion in determining air resistance.
PREREQUISITES- Understanding of vehicle dynamics and forces acting on vehicles
- Familiarity with the concepts of rolling resistance and drag force
- Knowledge of fluid dynamics, specifically drag equations
- Basic proficiency in unit conversion and metric measurements
- Learn how to apply the formula F = -0.5 * k * ρ * A * v² for calculating drag force
- Research the impact of different drag coefficients on vehicle performance
- Explore methods for calculating rolling resistance in various vehicle types
- Study the effects of gradient resistance on vehicle tractive force
Automotive engineers, physics students, and anyone involved in vehicle performance analysis will benefit from this discussion, particularly those interested in calculating tractive forces and understanding vehicle dynamics.
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