--%>
Assignment Help - homework help

Problem on damping coefficient

Vertical suspension system of a car can be modeled as single degree of the freedom system. Consider that the car with mass m consists of four shock absorbers with equal stiffness and damping of k and c, corresspondingly:

(a) Due to self-weight of the car, the suspension system is deflected by 0.03m. The suspension is made to be critically damped. If the car has a mass of 1530 kg, calculate the equivalent damping coefficient of the suspension system.
 
(b) Plot the displacement response of the suspension system in part (a). Also plot on the same diagram the responses of the suspension system if the initial velocities are 2 cm/s and -2 cm/s.
 
(c) If four passengers with the average mass of 70 kg each and luggage of 50 kg are in the car, how does this affect the effective damping ratio? Plot the displacement response of the suspension system on the same plot  in part (b) and comment the vibration characteristic of the car with passengers and luggage.

   Related Questions in Mechanical Engineering

  • Q : Problem on flow rates Water flows at 40

    Water flows at 40 m/s from the jet of area of cross-section of 0.008 m2 on to a flat plate as shown in the figure. Determine the force F normal to the plate, and also the flow rates out of the plate.

    Q : Technology and Engineering Explain

    Explain difference between the Technology and Engineering?

    		•
  • Q : Problem related to pressure gauge Water

    Water flowing via the vertical pipe is illustrated below. Compute the required pipe diameter for the smaller pipe,‘d’,  given that the two pressure gauges read similar value.

    Q : Mode Superposition Method Define Mode

    Define Mode Superposition Method in brief?

    		•
  • Q : Excitation of Modes in Fiber A

    A multimode fiber is used to couple light into a single mode fiber. Both fibers have the same total diameter. Explain the coupling. Use equations, MATLAB, etc. if necessary. If an LED is used to excite a single mode fiber, explain the coupling of light to the fiber? U

    		•
  • Q : Synchronous generator & Generating units

    Question 1: Three generating units operating in parallel at 60 Hz have rating of 300, 500, and 600    MW and have speed-droop characteristics of 5, 4, and 3%, respectively. Due to a change in load, a

    		•
  • Q : Problem related to the value of the

    Water flows via a pipe of about 300 mm diameter at the rate of 66 L/s. Evaluate the value of the manometer reading, ‘h’. The Specific gravity of manometer liquid is taken as 0.8.  

  • Q : Difference between PLC and Logic Card

    Difference between PLC and Logic Card: There is technically no difference. Both are logic controller utilized for several applications and in PLC has it's own internal memory (compared to Logic card).

  • Q : Rated Speed and Economic Speed Explain

    Explain difference between the Rated Speed and Economic Speed?

    		•
  • Q : How do you repair a hydraulic jack How

    How do you repair a hydraulic jack?

    		•