Balancing Of Rotating Masses
BALANCING OF ROTATING MASSES INTRODUCTION The balancing of rotating bodies is important to avoid vibrations. For a body to be completely balanced it must have two things:- Static Balance Dynamic Balance Body at single plane and multiple plane. Body at state and dynamic state for the multiple plane OBSERVATION Balancing of single-plane systems Balancing of multi-plane systems Masses is rotating in the same plane.
Balancing Of Rotating Masses
In order to balance the system dynamically, one can attach balancing mass to the same plane where distributed masses located. Masses is rotating in the different plane. When the distributed rotating masses locate in different planes perpendicular to the axis of rotation, dynamical balance of inertia forces is not enough to balance the system Start Install sector plates B5 and C5 Conduct experiment of balancing in single plane according to the information in Table 1. Observe the movement of the apparatus. Record and compare the observations. Analyze the data and discuss. FLOW CHART 1 Stop FLOW CHART 2 Install sector plates B5 and C5.
Conduct experiment of balancing in separate planes according to the information in Table 2 Observe the movement of the apparatus Record and compare the observations. Analyze the data and discuss. Stop Start PROCEDURE The sector plate B5 and C5 is installed at the internal side of the discs by using short screws 5/8”. 2) Conduct the experiment of balancing in a single plane of revolution by loading the required masses listed in the table. 3) Observation is recorded in the observation sheet, single plane. 4) Conduct the experiment of balancing in separate plane of revolution by loading the required masses listed in the table 1 5) Observations are recorded in the observation sheet, separate plane.
Apr 02, 2014 ROTATING MASSES &BALANCING For a machine rotating at high speed, balancing is very important Definition- resultant force acting for component.
- BALANCING OF ROTATING BODIES. SUMMARY In heavy industrial machines such as steam turbines, internal combustion engines and electric generators, unbalanced rotating.
- Balancing of different masses rotating in the same plane. Balancing of different masses rotating in different planes. 8/25/2015 Hareesha N G, Dept of Aero Engg, DSCE, Blore 7 8. Balancing of a Single Rotating Mass By a Single Mass Rotating in the Same Plane • Consider a disturbing mass m1 attached to a shaft rotating at ω rad/s as.
6) The results are compared and discussed with the expected result stated in the table in the observation sheet. Separate plane Observation and result Single-plane uses calculations and vector only 1 method for experiment the experiment only done by oscillating the balance.
Uses motor, the apparatus moves up and down only, indicate it’s balanced Theory and experiment result matches Comments on Single plane Piston Engine Ship’s Propelle Example uses calculation and vector. 2 methods used, static and dynamic. Most result, the plane return to its original state, indicating it is balance.
Theory and experiment matched except static method. Comments on Multiple Planes The different of balancing of the single plane and multiple plane is determined by planes position. The static and dynamic state of the multiple plane is determined by the positioning of the masses back to the ideal position. The rotating masses will be in equilibrium (M=0) when the movement is up or down only and masses initial goes back to the ideal position as it started before rotating. Insufficient Equipments Add on more nuts and bolts with correct size.
Otherwise, the existing ones will damage the body. Manual Testing Method Lever and springs needed to be added.
The lever will diminish human error (wiggling) and springs attached to the body will reduce the wiggling. Graphical annotation follows. Recommendations There are two methods in conductance. One using motor and another manual turning the plates. During manual testing, the plates are turned using external force (by hand). This causes the body of masses to wiggle or turn away It makes the process hard to be distingushed.
Manual Testing Method The screws and bolt needed were out numbered. The screws either nowhere to be seen, or different in dimension. Some screw are long that it hits the body, and some are small that does not fit into the hole.
Washers and nuts were used for long screws Insufficient Equipments Two major problem were detected. Insufficient Equipments Manual testing method Problem faced From the experiment we get to know, When M (Moment) = 0 (ideal state), the masses are in ideal position and balanced.
Thus, less vibration. Conclusion Lever Extra Spring supports.