Scene 1 (0s)
KINEMATICS OF MACHINES. Graphical Determination of.
Scene 2 (12s)
RECAP. The Four-Bar Mechanism. Four rigid links pinned in a closed loop: one fixed, one driving, one following, and one connecting them..
Scene 3 (37s)
THE IDEA. Why a Graphical Method?. At every crank angle, the linkage's closed loop must still close. That geometric constraint can be solved by drawing it to scale, instead of by algebra..
Scene 4 (1m 7s)
METHOD. Step-by-Step Construction. Repeated for each crank angle of interest, using a consistent length scale..
Scene 5 (1m 42s)
VISUALIZING THE METHOD. Locating Point B by Intersecting Arcs.
Scene 6 (2m 1s)
BUILDING THE FULL PICTURE. From One Position to a Displacement Diagram.
Scene 7 (2m 29s)
THE RESULT. The Displacement Diagram. Plotting rocker angle θ4 against crank angle θ2 reveals the full motion behaviour in one curve..
Scene 8 (2m 43s)
WEIGHING THE METHOD. Advantages & Limitations. ADVANTAGES.
Scene 9 (3m 5s)
KEY TAKEAWAYS. Summary. Construct to scale. Draw the fixed link, then the crank at the chosen angle — everything else follows..