Vibration due to Unbalanced Inertia Forces/Moments

Unbalanced inertia force generated in a machine is a common source of excitation. The machine foundations are subjected to dynamic forces/moments generated due to such unbalanced forces.

The effect of unbalanced forces

• Reduction of the life of the supports
• Vibrations causing noisy operation

Control Remedies

• Balancing of the inertia forces

The first step towards balancing is to analyze the inertia forces (and moments) present in a machine. We shall discuss some practical methods of balancing the different kinds of rotors