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olechampion

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The objective is to keep vertical acceleration constant at .5 m/s squared

Solving For: Spring Rate

**Three scenarios:**

bump height: 0.25 inch

bump height: 1 inch

bump height: 2 inchIn all scenarios the bump width is the entire road (ie like going onto a new road or bridge)

**Constants**

vertical acceleration m/s squared: .5

vehicle speed: 60 mph

Tire Stiffness:

Tire Diameter: 32.2 inches

Tire Overall Width: 9.3 inches

Tire Loaded Radius: 15.2 inches

Coefficient of Rolling Resistance: 0.012 (10.00 -20 BIAS)

Coefficient of Rolling Resistance: 0.008 (10.00 -20 RADIAL)

Cornering Coefficient (deg -1): 0.1370

Camber stiffness: 40 lb / deg

Vertical stiffness: 4935 lb / in

Rolling Circumference: 89.33071 in

Front Axle Weight: 6900 pounds

Rear Axle Weight: 13500 pounds

Suspension Travel: 4 inches

Length of shock extended: 18 inches

Length of shock compressed: 14 inches

Wheelbase: 241 inches

Dual Tires rear axle

*Side question, any decent suspension calculators to estimate problems like this? Would be great to do a sensitivity analysis.*