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Mechanical Vibrations

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What is the range of shaft diameters such that the natural frequency of the system is between 100 and 200 Hz.
mechanical vibrations updated 3.8 years ago by phenjoisilab • 0
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What is logarithmic decrement and what is its importance? Explain logarithmic decrement for spring mass underdamped system.
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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5. Deterimne torsional stiffness of 80cm long annular aluminum shaft [G =40N/mm2] of inner radius 30 mm and outer radius 40 mm.
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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Determine the effect of the mass of the spring on the natural frequency of the system shown in figure
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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Determine the natural frequency of the spring mass pulley system shown in figure
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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Find the natural frequency of system as shown in figure
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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Find the natural frequency of system as shown in figure
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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984
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Determine the values of the damping ratio, damped natural frequency , logarithmic decrement.
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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754
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Assume the return spring of the door to be critically Damped.
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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Determine the equation of motion for the systems shown in figure
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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697
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Determine natural frequency $(\omega n)$ of simple spring mass system into considering mass of spring. Or Prove that the effective mass of spring considering the K.E. is 1/3 of the total spring mass.
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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801
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Determine the nature and magnitude or damping twice and frequency of damped vibrations.
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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In an automatic filling process 500gms of certain liquid was to be filled in bags. The permissible variation is $\pm$ 5gms.
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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Calculate the central line and variable control limits of P chart using 3-sigma control limits and indicate the values that are out of control?
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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Find: i. The force transmitted to the foundation at 1000 rpm. ii. The force transmitted to the foundation at resonance and iii. The amplitude of vibration at resonance.
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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798
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Find i. The dynamic amplitude of machine. ii. The force transmitted to the supports.
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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902
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Find the amplitude of vibration at a speed of 60 Km/hr.
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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Determine the displacement amplitude of the vehicle
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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686
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How critical speed of the shaft is determines
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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713
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Find i. Resonant amplitude ii. Peak amplitude iii. Peak frequency iv. Resonant phase angle v. Peak phase angle
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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Determine a. Amplitude of vibration of machine. b. Force transmitted to the foundation. c. Phase lag d. Phase angle between transmitted force & exited force.
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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Determine: a. Stiffness of each spring. b. Dynamic force transmitted to the base at operating speed. c. Natural frequency of the system
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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863
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Sketch & explain frequency response curve for rotating unbalance.
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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Explain motion transmissibility with frequency response curve and formulae
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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Note on force transmissibility & isolation
mechanical vibrations updated 3.9 years ago by phenjoisilab • 0
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