Balancing and Vibration - Theory of Machines
Subject and UNIT: Theory of Machines: Unit V: Balancing and Vibration
The technique of tackling this problem is to transfer the centrifugal force acting in each plane to a single parallel plane which is usually termed as reference plane (R.P.).
Balancing and Vibration - Theory of Machines
Subject and UNIT: Theory of Machines: Unit V: Balancing and Vibration
A system of rotating masses is said to be in static balance if the combined mass centre of the system lies on the axis of rotation.
Balancing and Vibration - Theory of Machines
Subject and UNIT: Theory of Machines: Unit V: Balancing and Vibration
If several masses are rigidly attached to a shaft at different radii in one plane perpendicular to the shaft and the shaft is made to rotate, each mass will set up out-of-balance force on the shaft.
Balancing and Vibration - Theory of Machines
Subject and UNIT: Theory of Machines: Unit V: Balancing and Vibration
Consider a mass of m attached to shaft rotating at o rad/s, as shown in Fig.12.1(a).
Learning Objectives, Introduction
Subject and UNIT: Theory of Machines: Unit V: Balancing and Vibration
A machine has many moving parts. Some machines have rotating motion and some of them have reciprocating motion.
Force Analysis - Theory of Machines
Subject and UNIT: Theory of Machines: Unit IV: Force Analysis
Problems for Practice: Force Analysis - Theory of Machines
Force Analysis - Theory of Machines
Subject and UNIT: Theory of Machines: Unit IV: Force Analysis
Review questions: Force Analysis - Theory of Machines
Force Analysis - Theory of Machines
Subject and UNIT: Theory of Machines: Unit IV: Force Analysis
The property of matter offering a resistance to any change of its state of rest or of uniform motion in a straight line is known as inertia.
Force Analysis - Theory of Machines
Subject and UNIT: Theory of Machines: Unit IV: Force Analysis
The inertia force analysis in reciprocating engines becomes necessary due to their higher operating speed.
Force Analysis - Theory of Machines
Subject and UNIT: Theory of Machines: Unit IV: Force Analysis
From Section 11.5, we know that a rigid body of mass m can be replaced by two dynamically equivalent masses satisfying the three conditions.
Force Analysis - Theory of Machines
Subject and UNIT: Theory of Machines: Unit IV: Force Analysis
In dynamics problems, it is convenient to replace a rigid body by two separate concentrated masses placed at a fixed distance apart.
Force Analysis - Theory of Machines
Subject and UNIT: Theory of Machines: Unit IV: Force Analysis
Fig.11.2 shows the various forces acting on the reciprocating parts of a horizontal engine.