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1. A SDOF system with an equivalent mass of 20 kg, an equivalent stiffness of 3x10'...
Question 5 (1 point) An SDoF with a mass of {m} kg and a stiffness of...
Question 5 (1 point) An SDoF with a mass of {m} kg and a stiffness of {k} kN/m is subjected to an initial displacement. What would the damping coefficient need to be to make the damping ratio {z}. Your Answer: Answer Question 6 (1 point) If the frequency resolution of a vibration spectrum in the was set at 1.90 Hz, what would be the duration of the signal in seconds produced by the Inverse Fourier Transform? Your Answer: Answer Question...
63 Figure P6.3 shows a mass-damper system (no stiffness, Problem 2.3). Displacement x is measured...
63 Figure P6.3 shows a mass-damper system (no stiffness, Problem 2.3). Displacement x is measured from an equilibrium position where the damper is at the "neutral" position. The external force () is a short-duration pulse function: f(!)-5N for 0SS002 s, and f,() = 0 for t > 0.02 s. The system parameters are mass m-0.5kg and viscous friction coefficient b 3 N-s/m and the system is initially at rest. Usc Simulink to determine the system response and plot displacement xit)...
Consider a single degree of freedom (SDOF) with mass-spring-damper system
Consider a single degree of freedom (SDOF) with mass-spring-damper system subjected to harmonic excitation having the following characteristics: Mass, m = 850 kg; stiffness, k = 80 kN/m; damping constant, c = 2000 N.s/m, forcing function amplitude, f0 = 5 N; forcing frequency, ωt = 30 rad/s. (a) Calculate the steady-state response of the system and state whether the system is underdamped, critically damped, or overdamped. (b) What happen to the steady-state response when the damping is increased to 18000 N.s/m? (Hint: Determine...
A 4-kg mass is attached to a spring with stiffness 112 N/m. The damping constant for...
A 4-kg mass is attached to a spring with stiffness 112 N/m. The damping constant for the system is 16/7 N-sec/m. If the mass is pulled 20 cm to the right of equilibrium and given an initial rightward velocity of 2 m/sec, what is the maximum displacement from equilibrium that it will attain? 1 -2/7 617 1 (2+.4/7) 67 2+ meters. The maximum displacement is e (Type an exact answer, using radicals as needed.)
A 4-kg mass is attached to...
A 3-kg mass is attached to a spring with stiffness 81 N/m. The damping constant for...
A 3-kg mass is attached to a spring with stiffness 81 N/m. The damping constant for the system is 18/3 N-sec/m. If the mass is pulled 20 cm to the right of equilibrium and given an initial rightward velocity of 3 m/sec, what is the maximum displacement from equilibrium that it will attain? The maximum displacement is meters (Type an exact answer, using radicals as needed.)
A 5-kg mass is attached to a spring with stiffness 15 N/m. The damping constant for...
A 5-kg mass is attached to a spring with stiffness 15 N/m. The damping constant for the system is 10V3 N-sec/m. If the mass is pulled 10 cm to the right of equilibrium and given an initial rightward velocity of 2 m/sec, what is the maximum displacement from equilibrium that it will attain? The maximum displacement is meters. (Type an exact answer, using radicals as needed.)
6) The 18 kg mass of a spring-mass system is initially at rest. At time =...
6) The 18 kg mass of a spring-mass system is initially at rest. At time = 0, a 400 N force is applied (toward the right). Spring constant is 100 kN / m, and the viscous damping coefficient is 520 Ns/m Determine the transient response F = (400 N) 1(t) Delay time [HINT: may need to a) graphing calculator, fixed point iteration; or calculator equation solver] b) c) use a m Peak time Maximum overshoot (in mm)
6) The 18...
For a SDOF system with mass 1.4 kg, spring constant 4.2 N/m, and damping constant 1.5...
For a SDOF system with mass 1.4 kg, spring constant 4.2 N/m, and damping constant 1.5 N-sec/m, the damped period is (two decimals, units).
The system parameters of a freely-vibrating damped SDOF system are as follows: Mass, m= 100 kg...
The system parameters of a freely-vibrating damped SDOF system are as follows: Mass, m= 100 kg Damping Factor, c = 200 kg/s Spring Stiffness, k = 3000 N/m Initial Position, x, = 1 m Initial Velocity, v,= 0 m/s a) Create a MATLAB code and using the specified system parameters compute (using the correct units) the system characteristics: 1) natural (circular) frequency on; 2) cyclic frequency fn; 3) cyclic period p; 4) damped natural (circular) frequency 0g, and 5) damping...
Answer last four questions 1. A spring-mass-damper system has mass of 150 kg, stiffness of 1500...
Answer last four questions
1. A spring-mass-damper system has mass of 150 kg, stiffness of 1500 N/m and damping coefficient of 200 kg/s. i) Calculate the undamped natural frequency ii) Calculate the damping ratio iii) Calculate the damped natural frequency iv) Is the system overdamped, underdamped or critically damped? v) Does the solution oscillate? The system above is given an initial velocity of 10 mm/s and an initial displacement of -5 mm. vi) Calculate the form of the response and...
Question 5 (1 point) An SDoF with a mass of {m} kg and a stiffness of {k} kN/m is subjected to an initial displacement. What would the damping coefficient need to be to make the damping ratio {z}. Your Answer: Answer Question 6 (1 point) If the frequency resolution of a vibration spectrum in the was set at 1.90 Hz, what would be the duration of the signal in seconds produced by the Inverse Fourier Transform? Your Answer: Answer Question...
63 Figure P6.3 shows a mass-damper system (no stiffness, Problem 2.3). Displacement x is measured from an equilibrium position where the damper is at the "neutral" position. The external force () is a short-duration pulse function: f(!)-5N for 0SS002 s, and f,() = 0 for t > 0.02 s. The system parameters are mass m-0.5kg and viscous friction coefficient b 3 N-s/m and the system is initially at rest. Usc Simulink to determine the system response and plot displacement xit)...
A 4-kg mass is attached to a spring with stiffness 112 N/m. The damping constant for the system is 16/7 N-sec/m. If the mass is pulled 20 cm to the right of equilibrium and given an initial rightward velocity of 2 m/sec, what is the maximum displacement from equilibrium that it will attain? 1 -2/7 617 1 (2+.4/7) 67 2+ meters. The maximum displacement is e (Type an exact answer, using radicals as needed.)
A 4-kg mass is attached to...
A 3-kg mass is attached to a spring with stiffness 81 N/m. The damping constant for the system is 18/3 N-sec/m. If the mass is pulled 20 cm to the right of equilibrium and given an initial rightward velocity of 3 m/sec, what is the maximum displacement from equilibrium that it will attain? The maximum displacement is meters (Type an exact answer, using radicals as needed.)
A 5-kg mass is attached to a spring with stiffness 15 N/m. The damping constant for the system is 10V3 N-sec/m. If the mass is pulled 10 cm to the right of equilibrium and given an initial rightward velocity of 2 m/sec, what is the maximum displacement from equilibrium that it will attain? The maximum displacement is meters. (Type an exact answer, using radicals as needed.)
6) The 18 kg mass of a spring-mass system is initially at rest. At time = 0, a 400 N force is applied (toward the right). Spring constant is 100 kN / m, and the viscous damping coefficient is 520 Ns/m Determine the transient response F = (400 N) 1(t) Delay time [HINT: may need to a) graphing calculator, fixed point iteration; or calculator equation solver] b) c) use a m Peak time Maximum overshoot (in mm)
6) The 18...
The system parameters of a freely-vibrating damped SDOF system are as follows: Mass, m= 100 kg Damping Factor, c = 200 kg/s Spring Stiffness, k = 3000 N/m Initial Position, x, = 1 m Initial Velocity, v,= 0 m/s a) Create a MATLAB code and using the specified system parameters compute (using the correct units) the system characteristics: 1) natural (circular) frequency on; 2) cyclic frequency fn; 3) cyclic period p; 4) damped natural (circular) frequency 0g, and 5) damping...
Answer last four questions
1. A spring-mass-damper system has mass of 150 kg, stiffness of 1500 N/m and damping coefficient of 200 kg/s. i) Calculate the undamped natural frequency ii) Calculate the damping ratio iii) Calculate the damped natural frequency iv) Is the system overdamped, underdamped or critically damped? v) Does the solution oscillate? The system above is given an initial velocity of 10 mm/s and an initial displacement of -5 mm. vi) Calculate the form of the response and...
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