Entries by Prof. McCarthy

Linkages draw Bezier curves

Here is an example of our Bezier curve drawing linkages. The first draws Yang Liu’s first name in cursive. Rather than show the linkages all at once, they are separated so it is easier to see the curves that they draw. Also shown here is the linkage that draws the a cursive version of the […]

Design Research in China: Changzhou

Our trip through China concluded at a conference and workshop at Changzhou University. This video highlights the Changzhou conference on innovation in Robotics and Intelligent Manufacturing, the beauty of the city of Changzhou, and a rainy night in Shanghai. Our colleagues in China can see this video on YouKu at: Design Research in China: Changzhou

Linkage that signs your name

Yang Liu has developed Bezier linkages that trace trigonometric Bezier curves.  In this video he shows that he can design these linkages to draw his name in cursive. This is a demonstration of the colloquial description of Kempe’s Universality Theorem, which says “there is a linkage that signs your name,” described by William Thurston.  See […]

DMG-LIB.org mechanism library

The Digital Mechanism and Gear Library has a terrific collection of mechanism models, animations and books as well as links to other collections around the world. Select this link DMB-LIB.org. The Mechanism Description page has a long list of items, every one of which opens to a large number of interesting mechanism systems:

Design Research in China: Dalian

This is the third of five videos highlighting design research across China.  This captures the beauty of Dalian, a city on the Yellow sea, and the excellent research in precision machine design by colleagues and their students at Dalian University of Technology. Here is a link to this video on Youku for our colleagues in […]

Design Research in China: Xi’an

This video of our visit to Xi’an captures the beauty of the city and its surroundings, as well as the personality of the excellent professors and students at Xidian University. For our colleagues in China, here is a link to a Youku version of this video: http://v.youku.com/v_show/id_XMTg2MzQ5NDI4MA==.html

Prototype of the Trifolium Mechanism

Yang Liu and Peter Yang designed and built this physical prototype of our Trifolium mechanism.  It is fabricated from ABS using the Stratasys Fortus system in UCI’s Institute for Design and Manufacturing Innovation. Our Chinese colleagues can view this video on Youku at the link: http://v.youku.com/v_show/id_XMTg2MzQ2MjE5Mg==.html

Design Research in China: Tianjin

Chris McCarthy filmed and edited this video of our visit to Tianjin, which showcases the design research in mechanisms and robotics at Tianjin University and captures the energy and beauty of the city and its people. For our colleagues in China this video is available on youku.com: http://v.youku.com/v_show/id_XMTgzMTIyMTg1Ng==.html

Manufacturing Prototype for the Butterfly Linkage

This animation is taken from Yang Liu’s detailed design drawings for the manufacturing prototype of the Butterfly Linkage. The component parts are to be constructed by additive manufacturing. This animation includes the music of Explosions in the Sky: For our colleagues in China this animation is available through youku.com: http://v.youku.com/v_show/id_XMTgzMzA5ODQyOA==.html