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Free_and_Forced_Torsional_Vibration_System_with_Digital_Interface__(SMT-TM-45)

Free_and_Forced_Torsional_Vibration_System_with_Digital_Interface__(SMT-TM-45)

Free_and_Forced_Torsional_Vibration_System_with_Digital_Interface__(SMT-TM-45)

Model # (SMT-TM-45)
Category Mechanical Engineering, Electrical Engineering, Electronics and Telecommunication, Instrumentation and Control Engineering, Civil Engineering, Chemical Engineering, Automobile Engineering, Laboratory Hydraulic Presses, Physics Lab, Food Sciences, Environmental and Biotechnology
Sub Category Theory of Machines

The Free and Damped Torsional Vibration Apparatus is designed to study torsional vibrations
occurring about the shaft axis, allowing investigation of both free and damped torsional
rotation of a shaft. It enables students to determine the natural frequency of a rotary
oscillator and analyse the influence of torsional stiffness, mass, and damping on vibration
behaviour. The unit includes torsion bars of different diameters, mass disks with a sliding
chuck, and an oil damper for controlled damping. It helps demonstrate how excessive
torsional vibrations can cause failures in mechanical components such as shafts, couplings,
and gears, and how vibration dampers reduce these effects. This apparatus provides a
practical understanding of torsional dynamics in mechanical systems, ideal for experiments
in engineering mechanics and statics.

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The Free and Damped Torsional Vibration Apparatus is designed to study torsional vibrations
occurring about the shaft axis, allowing investigation of both free and damped torsional
rotation of a shaft. It enables students to determine the natural frequency of a rotary
oscillator and analyse the influence of torsional stiffness, mass, and damping on vibration
behaviour. The unit includes torsion bars of different diameters, mass disks with a sliding
chuck, and an oil damper for controlled damping. It helps demonstrate how excessive
torsional vibrations can cause failures in mechanical components such as shafts, couplings,
and gears, and how vibration dampers reduce these effects. This apparatus provides a
practical understanding of torsional dynamics in mechanical systems, ideal for experiments
in engineering mechanics and statics.

• Torsional bars:
• Qty: 3
• Diameter: Ø3mm, Ø5mm, and Ø6mm
• Disc 1:
• Diameter: 150mm
• Mass: 2.8kg (Approx.)
• Disc 2:
• Diameter: 230mm
• Mass: 4.9kg (Approx.)
• Chuck:
• Range: 0.5-12mm
• Dimensions and mass:
• L x W x H: 1250 x 350 x 1200mm (Approx.)
• 25kg (Approx.)


• Natural frequency of torsional vibration of bars of different diameter at different lengths.
• Effect of torsional stiffness, rotating mass and damping on frequency of torsional vibration.
• Factor on the behavior of a rotary oscillator.

• Dimensions and mass:
• L x W x H: 1250 x 350 x 1200mm (Approx.)
• 25kg (Approx.)

• Bars with different diameter and adjustable length
• Mass disks with chuck.
• Bearing block with ball bearing and chuck.
• Oil damper for damped vibration.
• Supplementary experiment to the universal
vibration system
• 3 torsion bars, and 2 weight discs
• Adjustable ball-bearing chuck
• Open oil-filled damper