When a 40-kg machine is placed on an elastic foundation, its free vibrations appear to decay...
When a 40-kg machine is placed on an elastic foundation, its free vibrations appear to decay exponentially with a frequency of 91.7 rad/s. When a 60-kg machine is placed on the same foundation, the frequency of the exponentially decaying oscillations is 75.5 rad/s. Determine the equivalent stiffness and equivalent viscous damping coefficient for the foundation.
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When a 40-kg machine is placed on an elastic foundation, its
free vibrations appear to decay...
An 120-kg machine tool is placed on an elastic mounting. The phase angle is measured as...
An 120-kg machine tool is placed on an elastic mounting. The phase angle is measured as 44.5° when the machine is excited at 30 Hz. When the machine is excited at 60 Hz, the phase angle is 122°. Determine the equivalent damping coefficient and equivalent stiffness of the mounting.
An air compressor of mass 120 kg is mounted on an elastic foundation. It has been...
An air compressor of mass 120 kg is mounted on an elastic foundation. It has been observed that, when a harmonic force of amplitude 120 N is applied to the compressor, the maximum steady-state displacement of 5 mm occurred at a frequency of 320 r/min. Determine the equivalent stiffness and damping constant of the foundation.
A 100 [kg] reciprocating internal combustion engine is fitted to a thin, massless beam using a...
A 100 [kg] reciprocating internal combustion engine is fitted to a thin, massless beam using a vibrations damper. It is known that a machine with a rotating unbalance experiences a frequency squared harmonic excitation. The magnitude of the rotating unbalance is A = m,e = 0.3 [kg. m). 1. Calculate the nondimensional function for the state that has a steady state amplitude of 10 [mm] at a 90 [rad/s] speed. 2- Determine the frequency ratio, natural frequency, and the beams...
A 200 kg machine is mounted, at first, on an undamed spring. During operation the machine...
A 200 kg machine is mounted, at first, on an undamed spring. During operation the machine has an unbalanced rotating component. When the system is operated at a variety of frequencies the machine had an unbounded response at 40 Hz. At 400 Hz the steady-state amplitude was 3.0 mm. (a) What is the stiffness of the mounting? (b) What is the magnitude of the rotating unbalance? (c) The machine of part (a) is mounted on the same spring in parallel...
Please answer all Questions if you can let someone who can A 200 kg machine is...
Please answer all Questions if you can let someone who can
A 200 kg machine is mounted on springs whose stiffness is 5x105 N/m. The machine has an exciting force of 1000sin(53t). (a) What is the steady-state amplitude if no vibration absorber is added? (b) Design a vibration absorber of mass 40 kg such that the steady-state amplitude of the primary system is zero at 53 rad/s. (c) What are the natural frequencies of the two degree of freedom system...
A 100 [kg] reciprocating internal combustion engine is fitted to a thin, massless beam using a vibrations damper. It is known that a machine with a rotating unbalance experiences a frequency squared harmonic excitation. The magnitude of the rotating unbalance is A = m,e = 0.3 [kg. m). 1. Calculate the nondimensional function for the state that has a steady state amplitude of 10 [mm] at a 90 [rad/s] speed. 2- Determine the frequency ratio, natural frequency, and the beams...
A 200 kg machine is mounted, at first, on an undamed spring. During operation the machine has an unbalanced rotating component. When the system is operated at a variety of frequencies the machine had an unbounded response at 40 Hz. At 400 Hz the steady-state amplitude was 3.0 mm. (a) What is the stiffness of the mounting? (b) What is the magnitude of the rotating unbalance? (c) The machine of part (a) is mounted on the same spring in parallel...
Please answer all Questions if you can let someone who can
A 200 kg machine is mounted on springs whose stiffness is 5x105 N/m. The machine has an exciting force of 1000sin(53t). (a) What is the steady-state amplitude if no vibration absorber is added? (b) Design a vibration absorber of mass 40 kg such that the steady-state amplitude of the primary system is zero at 53 rad/s. (c) What are the natural frequencies of the two degree of freedom system...
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