Chapter 6

 

Graphical Velocity Analysis

Graphical velocity analysis allows for quick checks of problem to find out what is going on before checking analytically. 



In this type of problem you are given a linkage along with w2 and theta 2. With that information you are expected to be able to find theta 3 and theta 4.


On the linkage you draw on the velocity vectors perpendicular to each of the links. This allows you to obtain VA, VB and VBA. 


You then draw the vectors VA with the correct direction and magnitude. Then you draw in VB and VBA with the correct directions and the intersection point is where the magnitudes are correctly proportioned. 


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