Joseph Klann provided a useful comparison of the leg designs for the Mondo Spider and Theo Jansen’s Strandbeest at this (archived) link: http://www.mechanicalspider.com/comparison.html. Here is an excellent web page about the Klann and Jansen leg mechanisms, as well as other leg designs: Dog Feather Designs. This article compares the leg designs: Mechanical Spider Using Klann […]
This walking machine is known as the Mondo Spider. More information is available at Mondospider.com. The leg of the mondo spider has the topology known as a Stephenson six-bar and is described in US Patent 6,260,862 awarded to Joseph Klann. Access it through the link:https://patents.google.com/patent/US6260862B1/en Wikipedia calls this the Klann linkage which is described here:http://en.wikipedia.org/wiki/Klann_Linkage
Theo Jansen builds amazing walking machines. 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/ [vimeo]http://vimeo.com/1242383[/vimeo]
The National Institute of Standards and Technology provides an on-line periodic table. Access it and other information at the link: Periodic Table
This is a link to notes on Geometric Design and Tolerancing by Prof. Graeme Britton of Raffles Design Institute, Singapore. A pdf version of Prof. Britton’s lecture is available at: http://synthetica.eng.uci.edu/mechanicaldesign101/GDandT.pdf Here is another excellent set of notes from the Technical College of New Jersey on geometric dimensioning and tolerancing.
Here is a link to a facebook album showing the racecars and teams at the 2009 Formula SAE California intercollegiate engineering racecar competition that occurred June 17-21, 2009 at the Auto Club Raceway, Fontana CA. http://www.facebook.com/album.php?aid=89098&id=92647534369
Michael Ashby presents materials information in a practical format in his book Materials Selection in Mechanical Design. This is a link to lecture notes that give an idea of his approach: http://www.uofaweb.ualberta.ca/cme/pdfs/443ashbylectures2006.pdf
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)
According to Shigley and Mischke’s Mechanical Engineering Design (McGraw-Hill 1989) experiments show that the tensile stress supported by a threaded rod equals that of a rod with diameter that is the mean of pitch and minor diameters of the threads. Thus, the tensile stress area of a threaded fastener is computed from the average of its […]
This are two animation of the operation of a diesel engine. The first focuses on the four stroke cycle. The second start with the turbo-charger, and makes its way through the engine.