Ranger Mike said:tuff question..you have to understand the basics of the vehicle suspension before you can
1. determine proper spring rate
2. proper shock ( dampers)
also
what type tire? tire construction..radial . bias ply, material ??
i suggest you read race car suspension post i did earlier on this forum
you have to look at track surface ( road conditions)
serbring said:I have studied the problem, I am interested to frequency from 0 to 10Hz at maximun for bouncing and pitching, while for rolling from 0 to 3Hz. I have read there is a ISO's standard for estimating the vehicle frequency rolling responce, through the application of a steering wheel oscillation, but it isn't good for me because I have to measure also other accelerations and they has a good meanings only during real vehicle traveling condition. I have thougth to pass on a rough track at different speeds, but my doubt is to understand if the excitation frequency amplitude content is good enough since I can't control precisely the excitation. I hope to have explained better my problem.
Vehicle ride vibration refers to the movement and oscillation of a vehicle as it travels on a road or other surface. It is caused by various factors such as the condition of the road, the design and suspension of the vehicle, and the speed at which it is traveling.
Estimating pitching, bouncing, and rolling in a vehicle is important because it can affect the comfort, safety, and overall performance of the vehicle. Excessive amounts of these vibrations can cause discomfort for passengers, damage to the vehicle, and even lead to accidents.
Vehicle ride vibration can be measured using sensors and instruments that are specifically designed for this purpose. These sensors can measure the frequency, amplitude, and other characteristics of the vibrations, which can then be analyzed to estimate pitching, bouncing, and rolling.
There are several factors that can contribute to vehicle ride vibration, including the condition of the road, the suspension system of the vehicle, the weight and distribution of the load, the speed at which the vehicle is traveling, and the type of tires being used.
There are various methods for reducing vehicle ride vibration, including improving the design and suspension of the vehicle, using high-quality tires, maintaining the road in good condition, and adjusting the speed at which the vehicle is traveling. In some cases, additional measures such as shock absorbers or vibration dampeners may also be used.