Animations of linkage movement.
Theo Jansen builds amazing walking machines as can be seen in this video:
Each leg is an eight-bar linkage. The Wolfram Demonstration Project models this linkage in a Mathematica notebook. See the link:
http://demonstrations.wolfram.com/ATheoJansenWalkingLinkage/
This design concept is an 8-bar linkage developed by Minshan Tsai and GimSong Soh for my advanced mechanisms class, UCI Robotics and Automation Lab. It is now on YouTube:
The dishwasher linkage design concept developed by Marshall Meek in my advanced mechanisms course (UCI Robotics and Automation Lab) is now accessible on YouTube:
This 10-bar linkage is designed to drive a scissors movement in order to actuate a deployable structure. It was presented at the 2009 ReMar Conference in London. (UCI Robotics and Automation Lab)
Prof. David Alciatore has a large number of videos illustrating machines, physics principles and billiards, including high speed videos. Video demonstrations of mechanisms can be found at the following site as well as links to much more:
This assembly of spherical rhombus linkages expands to enclose a volume. It was designed by Jerome Choe to explore the construction of complex articulated systems. (UCI Robotics and Automation Lab)
Chris Sangwin has a nice collection of linkage movies on his web-site http://www.howround.com. Particularly nice are the straight line mechanisms found at the link:
http://web.mat.bham.ac.uk/C.J.Sangwin/howroundcom/straightline/exact.html
His example of the Sarrus linkage is also found on YouTube:
Fred Klingener has generated a number of interesting mechanism animations. My favorite is the Peaucellier straight line mechanism. You will find a table of 16 or so animations at his site:
http://www.brockeng.com/mechanism/index.htm
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This link connects to a web-page with a number of linkage animations. There are several planar four-bar linkages, several spherical four-bar linkages, and an example of a spatial four-bar linkage called a Bennett linkage that is shown below. This page also includes a number of spherical linkage animations generated by students some years ago. (UCI Robotics and Automation Lab)
http://synthetica.eng.uci.edu/~mccarthy/Linkages.html
This animation was generated by HaiJun Su using POV-Ray. It is a Bennett linkage designed to guide the coupler linkage through three specified task positions:
The KMODDL team at Cornell University maintains an excellent digital library of kinematic models with animations. Access their site at the link:
http://kmoddl.library.cornell.edu/
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