Automotive Frequency of suspension system of vehicle

AI Thread Summary
The discussion centers on the frequency ranges of suspension systems and dampers for different vehicle types, specifically two-wheelers, four-wheelers, and heavy vehicles. Participants emphasize the complexity of measuring these frequencies due to various road conditions that affect performance. They seek approximate frequency values for spring suspensions and dampers, both separately and in combination, while acknowledging the challenges in obtaining precise measurements. One contributor mentions the importance of considering factors like spring rate and shock behavior under heat during tuning. The conversation highlights the need for rough frequency estimates to aid in understanding vehicle suspension dynamics.
vivekdoulat
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What is the frequency Range with which the suspension systems and damper of 2
wheelers, 4 wheelers and heavy vehicles, vibrate? I would like to have the values for each
i.e. frequency of spring suspension and damper separately and also when used in combination.
I have attached a excel sheet for the same.

Vehicle Type Spring suspension (Hz) Damper (Hz) Combined (Hz)

2 wheeler

4 wheeler

Heavy vehicle vivekd@urdip.res.in
 

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not that simple...spring and shock are acted upon by the track (road surface) now you have numerous variables like pot holes, cracks, rumble strips, tar patches and the like. what is your goal asking this question?
 
Eliminating major variables like potholes...
Considering normal road condition with usual disruptions and dents...I just want a rough and approximate values of each...more precisely i would like to know the frequency ranges...minimum to maximum...
 
i don't know about frequency ..i can measure the spring and give you wire diameter, height.most springs are rated in pound per inch compression..i have a spring rate tester..shocks must be measured on a shock dynometer..one thing about shocks..the rate will change as the shock heats up which is why chassis tuning in racing is so tuff.
 
Thanks Mike...but I need values...
 

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