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Kinematics with MicroStation - Ch03L Centrodes

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Published on Aug 17, 2010

Complete Kinematics course made in MicroStation http://www.Bentley.com ; for deeper, intuitive learning without abstract formality and dry rigor for its own sake.

This video starts by defining what Centrodes are. It is shown for a rolling wheel. Next a four bar is taken and its space and body centrodes are traced by dragging the mechanism and switching the fixed link. Finally, profiles are created from the centrodes, which roll relative to each other to give the same motion to the coupler even in the absence of the mechanism.

0:10 Concept of Centrode as the path of Instantaneous Center (IC)
0:40 Centrode for a rolling wheel
1:08 Tracing centrode for a four bar
1:40 How I13 moves and traces Fixed/Space Centrode
2:12 Tracing Moving/Body centrode
2:55 Relation between space & body centrodes
3:15 Retention of contact between space and body centrodes
3:20 Drag and move the model of cetnrodes as profiles in rolling contact
4:10 Substituting links with centrode to get equivalent coupler motion

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