ADAMS - Project - Hardpoint tuning to achieve pitch gradient targets using suspension “anti” characteristics
Since this project is a litte complex, I want to explain everything step by step.
1- Firstly I opened the front SLA and the rear multilink suspension and arrange the setup parameters according to the values that is given us for this project.
For Front Suspension
<!--[endif]-->
For Rear Suspension<!--[endif]-->
2- I modified the spring stiffness by changing the value in the spring data according to the desired value that is given in this project.
For front spring stiffness (Linear 100 N/mm)
<!--[endif]-->
For rear spring stiffness (125 N/mm)
3- I modified the hardpoint of the suspension to get the desired Motion Ratio value.
Front Suspension before hardpoint tuning.
<!--[endif]-->
Front Suspension after hardpoint tuning for 0.48 Motion Ratio
Result
<!--[endif]-->
Rear Suspension before hardpoint tuning.
<!--[endif]-->
Rear Suspension after hardpoint tuning for 0.59 Motion Ratio
<!--[endif]-->
Result
<!--[endif]-->
4- After many tries of changing the hardpoint coordinates, I came up to close result to the target value.
Note: Red line are the lines before tuning the hardpoint.
Note: Blue linesa are the lines after chaning the hardpoint.
Final Hardpoint Cordinates
Front
Rear
Ride Rate
Front
Rear
Side View Swing Arm Length (SVSAL)
Front
Rear
Side View Swing Arm Angle (SVSAA)
Front
Rear
Braking
Anti-Dive Percentage (Front)
Anti Lift Percentage (Rear)
Front Deflection (Dive) in Braking
Rear Deflection (Lift) in Braking
Acceleration
Anti-Lift Percentage (Front)
Anti-Squat Percentage (Rear)
Front Deflection (Lift) in Accelerating
Rear Deflection (Squat) in Accelerating
Final Result
Target for Brak.ing Pitch Angle was 1.6 deg/g
Calculated Braking Pitch Angle is 1.68 deg/g
Achievment is �.24
Target for Acceleration Pitch Angle was 2.25 deg/g
Calculated Acceleration Pitch Angle is 2.35 deg/g
Achievment is �.74
Enes AKDENİZ 07.09.2023