What is the combined stiffnes, Mechanical Engineering

Assignment Help:

A competitor in a hill-climb event finds during practice that his car becomes airborne at a particular point on the hill.  Shortly after landing the lowest point in the car just contacts the road.   The mass of the car is 2000 kg and the suspension is designed to give a natural frequency of 1.3 Hz.  The static ground clearance is 100 mm.  The dampers are set to give a damping ratio of 0.3 of critical damping.

(a)  What is the combined stiffness of the suspension springs?

(b)  What is the damping coefficient of one of the dampers assuming they are identical?

(c)  Determine the minimum ground clearance after impact which would result if the damper settings were increased by 25%. 

You should assume that the car can be treated as a one degree of freedom system for the transient that occurs when it hits the ground.  You should assume that the suspension springs are in their static equilibrium position when the car hits the ground.  You should also assume that after becoming airborne the car always hits the ground with the same downwards velocity.

Note that the transient response for a one degree of freedom system with z < 1 is given by

7_noise vibaration.png

where   x(0) and x'(0) are the initial displacement and velocity at t = 0.

You may wish to use EXCEL to solve part (c)


Related Discussions:- What is the combined stiffnes

Distribution of shear force, Determine distribution of shear force, bending...

Determine distribution of shear force, bending moment and stress due to bending in the simply supported beam shown in the figure below, the beam self-weight is included in the unif

Voltage -fundamentals of electricity , Voltage: The voltage is the potent...

Voltage: The voltage is the potential difference between two points. The current flows from higher potential to lower potential. Voltage is measured in volts (V). V = IR

Computational mechanics in design, Figure shows an impression of one of man...

Figure shows an impression of one of many lifting arrangements produced and used at a steel fabrication workshop. It was manufactured to lift a maximum of 50 kg and due to a produc

HW engineering Statics, Hello, I need some assistance in solving engineerin...

Hello, I need some assistance in solving engineering statics problems. In the following link, I have uploaded seven questions. I need help solving these problems step-by-step. I

Michelson interferometer, why G2 is introduced in michelson interferometer ...

why G2 is introduced in michelson interferometer tell with proper diagram

Shear stress, write the assumption made in derivetion of shear stress produ...

write the assumption made in derivetion of shear stress produced in circular shaft subjected to torsion

What is hydraulic press, (i) Hydraulic press:   This can be used...

(i) Hydraulic press:   This can be used to lift a heavy load placed on the platform of larger piston or to press the things placed among the piston and the heavy platfor

Basic requirements of a control scheme of steam generators, Q. Basic requir...

Q. Basic requirements of a control scheme of steam generators? The basic requirements of a control scheme are: • Master steam pressure control by feedback to the water flow

Opportunities, what is the positive opportunities for this major

what is the positive opportunities for this major

Thin cells, what type of stresses a thin cell is subjected to?

what type of stresses a thin cell is subjected to?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd