If I were researching this seriously, I would advance on two fronts. First, I would build a robotic spaghetti-bender so that the forces were more reproducible between trials. There are a good fistful of variables in the way you put stress on the noodle: each hand exerts a translational force on the piece of noodle it's gripping, as well as a torque; the robotic jig ought to provide controls for at least some of those variables. Second, it is clear to me that a thousand frames per second is at least an order of magnitude too slow. Everything interesting to this problem happens between two adjacent frames: in one frame, the noodle is in one piece, and in the next, three breaks have occurred and two pieces are spinning away wildly into the air. We need to resolve the breaks into distinct frames to see what order they happen in; it seems likely that rebound from early breaks causes the late ones. On Mon, Nov 24, 2014 at 5:29 PM, Hugh Everett <cche@heverett.net> wrote:
It occurs to me that the speed of bending may result is varying numbers of breaks. I imagine the breaking stress being nearly uniform over the noodle. When you continuously increase the stress it could occur that the duration of failure is long enough for other points to also fail before enough stress is released to stabilize the remaining noodle sections.
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