ABSTRACT
This chapter discusses the methods for finding the velocities at various points on the linkage using two different approaches: Graphical Approach and Analytical Approach. Velocity is a vector, which means that it has a magnitude and a direction. It is common (but inaccurate) to say that a car moves with a velocity of 100 km/h. The method of instant centers is a powerful means of performing a quick velocity analysis on a linkage for one instant in time.While the instant-center method shown earlier can be used to easily find the velocities on a linkage at a single point in time, it is tedious to use if the velocities over the entire range of motion are needed. The velocity analysis of the geared fivebar linkage is a simple extension of the analysis of the fourbar linkage. Once the position analysis has been performed using the Newton–Raphson approach, the velocity analysis proceeds as with the other sixbar linkages.
