| Dynamics and Vibrations Laboratory |
| Laboratory Technical Staff: Eng. Parvaneh Afshari Ext. No: 5718 The dynamics and vibrations laboratory of mechanical engineering department offers a variety of experiments for undergraduate students. What follows is a brief description of each available experiment.
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| Simple, Compound and Bifilar Pendulums |
| Objectives: - Investigation of the frequency of vibrations of simple, compound and bifilar pendulums
- Experimental verification of mass independence of pendulum period
- Practical investigation of gravitational acceleration
- Determination of moment of inertia and radius of gyration
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| Torsional Vibrations |
| Objectives: - Determination of natural frequency of torsional vibrations of 2-DOFs system
- Experimental verification of the nodal point
- Evaluation of shear modulus
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| Gyroscope |
| Objectives: - Investigation of gyroscopic effect
- Finding the relation between the applied moment and angular velocity of precession
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| Spring-Mass System |
| Objectives: - Finding the stiffness constant of different springs with quasi-static loading
- Investigating the free vibrations of the mass-spring system and determining the period of oscillations
- Finding the effective mass of the springs
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|  | Governor |
| Objectives: - Investigation of the fundamental principles of Hartnell, Proell and Porter governors
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|  | Vibrations of Mass-Spring-Damper System |
| Objectives: - Finding the damped natural frequency and viscous damping coefficient of the free vibrations of the system
- Experimental evaluation of the phase lag angle between the excitation force and the response of the system
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|  | Whirling |
| Objectives: - Finding the critical frequency of rotating shafts
- Understanding how stroboscope works and describing the stroboscopic effect
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|  | Static and Dynamic Balancing |
| Objectives: - Investigation of static and dynamic equilibrium of rotating bodies
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|  | Center of Percussion |
| Objectives: - Finding center percussion of a compound pendulum
- Comparison between the experimental and theoretical radius of gyration
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|  | Flywheel |
| Objectives: - Understanding the dynamics of rotating systems
- Evaluating the moment of inertia of a flywheel
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|  | Cam and Follower System |
| Objectives: - Understanding different types of cam and follower systems
- Experimental observation of kinematic and dynamics of cams and drawing their motion curves
- Investigation of jerk phenomenon in cams and how to prevent this event
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