Vehicle Ride 1

9. This challenge tests understanding of the concept of flat ride

1.Calculate the following parameters. Use the same front and rear spring rates for all three load conditions.

The front sprung mass natural frequency target at design is 1.15 Hz. Keep this fixed

i.Recommended rear sprung mass frequency based on speed and wheelbase at design condition

ii.Front sprung mass natural frequency at design. This will essentially be (i).

iii.Front spring rate

iv.Rear spring rate

v.Front sprung mass natural frequencies at curb and GVW

vi.Rear sprung mass natural frequencies at curb and GVW

vii.Front unsprung mass natural frequency at all three load conditions

viii.Rear unsprung mass natural frequency at all three load conditions

ix.Rear/Front frequency ratio for all three load conditions

2.Plot the bump oscillation profile for all three load conditions using the method we developed in class. You can do this in excel. Use e^-t*sin(wt) as a function for the profile.