Theory of Machines: Unit V: Balancing and Vibration
Review and summary
Balancing and Vibration - Theory of Machines
If the moving parts of a machine are not balanced completely, then the inertia forces are set up which may cause excessive noise, vibration, wear and tear of the system.
REVIEW AND SUMMARY • If the moving parts of a machine are not balanced completely, then the inertia forces are set up which may cause excessive noise, vibration, wear and tear of the system. So balancing of machines is necessary to eliminate them. • Balancing of single rotating mass is done either by (i) Introducing single revolving mass in the same plane, or (ii) Introducing two revolving masses in different planes. • In this chapter, the balancing of several masses rotating in the same plane are discussed. The magnitude and position of the balancing mass can be obtained by analytical and graphical methods. • A system of rotating masses is said to in static balance if the combined mass centre of the system lies on the axis of rotation. • A system of rotating masses is in dynamic balance when there does not exist any resultant centrifugal force as well as resultant couple. • Conditions for complete balancing are: 1. The resultant centrifugal force must be zero, and 2. The resultant couple must be zero. • Dalby's method for balancing of several masses rotating in different planes are also discussed elaborately with sufficient example problems.
Theory of Machines: Unit V: Balancing and Vibration : Tag: : Balancing and Vibration - Theory of Machines - Review and summary
Related Topics
Related Subjects
Theory of Machines
ME3491 4th semester Mechanical Dept | 2021 Regulation | 4th Semester Mechanical Dept 2021 Regulation