Engineering, 12.03.2021 15:00 jarteria0

Consider a damped mass on a spring driven by a sinusoidal, externally applied force. (This is called a driven, damped harmonic oscillator and is common in aeroelastic structures like wings.) The resonant frequency in rad/s of this type of oscillator is: ω= √k/m- c^2/2mk

where the spring constant in N/m, the mass in kg, and the damping coefficient in kg/s are typically aspects of your system you can design. However, due to manufacturing variability, you do not have exact control over c. Instead c, k and m are independent and normally distributed with mean and standard devation as follows:

μ σ
c 2.6 0.34
m 9.84 1.42
k 17.3 1.85

Required:
Use MATLAB to simulate N=10000 random samples of the resonant frequency wr given samples from the above random variables, and compute the 5% and 95% percentile of the resonant frequency.

Answers: 3

Show answers

Another question on Engineering

Engineering, 03.07.2019 14:10

If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.

Answers: 3

Answer

Engineering, 04.07.2019 18:10

You are making beer. the first step is filling the glass carboy with the liquid wort. the internal diameter of the carboy is 15 in., and you wish to fill it up to a depth of 2 ft. if your wort is drawn from the kettle using a siphon process that flows at 3 gpm, how long will it take to fill?

Answers: 1

Answer

Engineering, 04.07.2019 18:10

Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.

Answers: 3

Answer

Engineering, 06.07.2019 02:30

On solidification from a melt, the polymer polyethylene forms a semi-crystalline spherulite structure. (i) sketch an individual spherulite and label the amorphous and crystalline regions. (ii) draw a schematic to show the changes in specific volume with temperature during cooling from the melt, comparing it to the theoretical extremes of fully crystalline and fully amorphous (indicate tm and tg)

Answers: 2

Answer

You know the right answer?

Consider a damped mass on a spring driven by a sinusoidal, externally applied force. (This is called...

Questions