Question

In: Mechanical Engineering

My car is Jeep Cherokee 2016 latitude with two-wheel rear drive, and please give me a...

My car is Jeep Cherokee 2016 latitude with two-wheel rear drive, and please give me a complete plan to test my Jeep's suspension system. For the rest information, I can use the values get from Google. Is it underdamped, overdamped, or else? Is it time to replace them yet? Why? If you can provide graph in excel, it would be great, Thanks.

Solutions

Expert Solution

Plan for testing suspension system-

By pressing front downward you can check front suspension.if the suspension bounce back quickly u can understood that the suspension system is in good condition so the suspension system is critical damped or else the downward movement is less you may consider as over damped and if easyly goes downward the situation is called under damped. by applying rear brake in full load condition you can check rear suspension for above conditions.

generally suspension system set with slightly overdamped by continuous use the stiffness of spring decreses so if your vehicle suspension stiffness adjustment screw reached its ultimate point at that time you need to change the suspension system.

procedure to find out a susoension system is under ,or critcal or over damped-

A suspension system test rig is available.on that test rig mount your suspension system and apply load .then take all the parameters shown by rig.

From damper/dashpot specification note down actual damping coefficient.for critical damping coefficient you have to note mass on the system and calculate natural angular frequency then find critical damping coefficient = 2 x m x (omega)natural or else 2((km)to the power 1/2 ) then find if its value less than 1 its called under damped if its 1 critical damped and greater than 1 over damped.follow these steps and plot the graph taking those values.


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