Class : V Semester Mechanical Sections : A & B
LIST OF EXPERIMENTS
1. Free Transverse Vibration – I – Determination of Natural Frequency
2. Cam Analysis – Cam Profile and Jump-speed Characteristics
3. Free Transverse Vibration – II – Determination of Natural Frequency
4. Free Vibration of Spring Mass System – Determination of Natural Frequency
5. Compound Pendulum – Determination of Radius of Gyration and Moment of Inertia
6. Bifilar Suspension – Determination of Radius of Gyration and Moment of Inertia
7. Trifilar Suspension – Determination of Radius of Gyration and Moment of Inertia
8. Whirling of Shaft – Determination of Critical Speed
9. Balancing of Rotating Masses
10. Determination of Gyroscopic Couple
11. Turn Table
12. Hartnell Governor
13. Free Vibration of Spring Mass System – Determination of Natural Frequency
Beyond the Syllabus
14. Speed Ratio of Epi-cyclic Gear Train
15. Speed Ratio of Worm and Worm Wheel
EX NO:1: TRANSVERSE VIBRATION - I
Aim: To find the natural frequency of transverse vibration of the cantilever beam.
Apparatus required: Displacement measuring system (strain gauge) and Weights
Description: Strain gauge is bound on the beam in the form of a bridge. One end of the beam is fixed and the other end is hanging free for keeping the weights to find the natural frequency while applying the load on the beam. This displacement causes strain gauge bridge to give the output in milli-volts. Reading of the digital indicator will be in mm.
Formulae used: 1. Natural frequency = 1/2(((g/() Hz where g= acceleration due to gravity in m/s2 and ( = deflection in m.
2. Theoretical deflection (= Wl3/3EI Where, W= applied load in Newton, L= length of the beam in mm E= young’s modules of material in N/mm2, I= moment of inertia in mm4 =bh3/12 3. Experimental stiffness = W/( N-mm and Theoretical stiffness = W/( =3EI/l3 N/mm
Procedure: