http://wiki.waggy.org/dokuwiki/ 2011-12-09T14:03:04-06:00 http://wiki.waggy.org/dokuwiki/ http://wiki.waggy.org/dokuwiki/lib/images/favicon.ico text/html 2011-12-08T13:49:40-06:00 dw http://wiki.waggy.org/dokuwiki/mandelbulb?rev=1323373780&do=diff PoV-Ray Mandelbulbs --- David Wagner 2009/11/27 03:53 I also posted some animations on YouTube. [Rear View of the Power Eight Mandelbulb Iteration Seven Isosurface] [Front View of the Power Eight Mandelbulb Iteration Six Isosurface] [Another View of the Tail of the Power Eight Mandelbulb, Iteration Six Isosurface] [One of the "Knob Gardens" on the Power Eight Mandelbulb at Seven Iterations] [Closeup of the "Dragon Crest" on the Power Two Mandelbulb] [Another Rendering of the "Dragon Crest"] … text/html 2011-12-06T13:57:19-06:00 dw http://wiki.waggy.org/dokuwiki/draft/thrust-line?rev=1323201439&do=diff NOTES: Thrust Line Analysis --- David Wagner 2009/02/15 15:05 A thrust line analysis can be used to determine the stability of pure compressive or pure tensile structures. Stonemasonry is considered to have infinite compressive strength but no tensile strength, so the net force at every point must remain compressive. One way to visualize this is to determine the thrust line, the axis of maximum compressive force through the structure. The thrust line must not go outside the bounds of a str… text/html 2011-01-26T16:42:52-06:00 dw http://wiki.waggy.org/dokuwiki/me5113/hw_5b?rev=1296081772&do=diff ME5113 Controls Homework #5 --- David Wagner 2011/01/26 16:50 A memristor is a passive electronic component that can be thought of as a resistor with memory, hence the name. It's resistance depends on the amount of charge q that has passed through it. It is a non-linear device and its current state depends on its time history. It can be modeled generally as a 1-port device with the following constitutive law relating momentum (p) and displacement (q). text/html 2010-11-23T16:57:16-06:00 dw http://wiki.waggy.org/dokuwiki/me5413/hw_12?rev=1290553036&do=diff ME 5413 Solids HW #12, Due 2010-11-23 --- David Wagner 2010/11/23 15:08 Exercise 9.1 Under the assumption that sigma_x = sigma_y = tau_xy = 0, show that equilibrium and compatibility equations with zero body forces reduce to relations (9.1.2). Next integrate relations