Module 10 : Vibration of Two and Multidegree of freedom systems; Concept of Normal Mode;
                      Free Vibration Problems and Determination of Ntural Frequencies;
                      Forced Vibration Analysis; Vibration Absorbers; Approximate Methods -
                      Dunkerley's Method and Holzer Method
Lecture 1 : Free Vibration of Two d.o.f. systems
 
Recap
  In this lecture you have learnt the following.

Procedure for developing the equations of motion is same for single or two d.o.f systems.

A two d.o.f system is represented by two second order ordinary differential equations of motion.

The two d.o.f system has two natural modes of vibration – these are the shapes of vibration with constant amplitude ratios for the two masses under synchronous motion at the system natural frequency. If the system is set to vibrate initially in either of these two modes, it will continue to vibrate forever in that mode at that natural frequency.

  Congratulations, you have finished Lecture 1. To view the next lecture select it from the left hand side menu of the page.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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