11.For the following industrial device consisting of a mass isolated from its fixtures by two rubber dampers and a offset spring provide an estimate of the system's damped natural frequency in the vertical direction. Assume the rubber dampers ądd damping and only negligible stiffness to the system and that the spring is long enough such that the angles remain constant. rubber damper

11.For the following industrial device consisting of a mass isolated from its fixtures by two rubber dampers and a offset spring provide an estimate of the system's damped natural frequency in the vertical direction. Assume the rubber dampers ądd damping and only negligible stiffness to the system and that the spring is long enough such that the angles remain constant. rubber damper

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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The landing gear of a commercial aircraft is modeled as mass-spring-damper system as shown in figure below. Your role is to define the main characteristics of such motion when the aircraft lands on rough runway that causes an oscillator motion as shown in the Figure.8. Your manger asked you to write a report showing your analysis for the system to avoid any excepted damages to the landing gear. Damper | x(1) Suspension System Oscillation Spring Street and Bumps Oscillations Elastic Tire Figure.8: Car's Suspension mass-spring-damper system A. For any mass-spring system, explain the natural frequency of vibration. B. To identify the system main parameters, the following mass-spring-damper model is identified: x(t) = 0.1179e-25.2t sin (50t + 0.32247) Determine the amplitude and phase angle of the transient response within the system? C. What is the frequency of the runway vibration required to cause resonance? Briefly, explain why it happens. D. Briefly, suggest how to prevent resonance…
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Question 1: The armature of a variable-speed electric motor, of mass 200 kg, has an unbalance due to manufacturing errors. The motor is mounted on an isolator having a stiffness of 10 kN/m and a dashpot having a damping ratio of 0.15. Find the speed range over which the amplitude of the fluctuating force transmitted to the foundation will be larger than the exciting force. Find the speed range over which the transmitted force amplitude will be less than 10 percent of the exciting force amplitude.
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