I’m pretty underwhelmed with many of the pictures I took from Switzerland, but they’re up on flickr. This one almost faithfully recreates the majesty of the Alps. This was taken on top of Rothorn, near Brienz. I think the major issue I have with all my pictures is simply that...

The pebble breakage routine (introduced Pebble breaking in DEM) has received an upgrade but is still not complete. I’ve applied it here to a simulation of an oedemetric compression that we often do experimentally in the lab. There’s still not a lot of thought going into the criteria that decides...

The guts of my research for the last year or so has been on predicting the effects on the thermomechanics of a packed bed if there are individual pebbles in that bed that are cracking or breaking. This is important for fusion reactors because for the ‘solid breeder’ concept, we’d...

The Surly Ogre is a work horse. I’ve strapped a small refrigerator to the back of it and ridden down the hills from UCLA without even a blink at the load. Its beauty is in its strength.

The poor SOMA gets a facelift whenever the devil gets a hold of my idle hands. This is from last Fall. I think I’ve put 4 different handlebars on since then. No more fenders. A triple crank up front. Its a never-ending project.