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Galloposaur

Seaside Romp, 1990: James Gurney revels in mammalian trots. More for future reference than anything else.

Kentrosaurus v0.06

kent_walk_d

I’ve had this done for some time now, but only got around to rendering just now. It’s my tried and true Kentrosaurus ala Heinrich, but now with the lessons learned from the elephant gait analysis. Can you see the difference from my old walk (from way back when)? Beside the background color?

kent_walk_b

The difference is very subtle but has the effect that while the back two legs basically biped along with 4 frame overlap, the front legs are asymmetrically shifted so that – instead of an alternating left / right stance – there is more time with three feet on the ground. Once I’ve seen both, the symmetrical one looks laughably wrong.

Run, don’t walk…

Continued from earlier… now a run…

biomech_elephant-run

the same run at 1/8 regular speed:
biomech_elephant-run-8

walk, don’t run…

biomech_elephant-walk

and here the same walk at 1/4 regular speed:
biomech_elephant-walk-4

Updated work on the study Biomechanics of locomotion in Asian elephants by Genin, Willems, Cavagna, Lair & Heglund. I’m getting a better grip on the staggered footfall patterns and the forces which are driving them forward, visible in body lunges particularly in the treadmill versions.

Another paper of direct relevance is The movements of limb segments and joints during locomotion in African and Asian elephants by Ren, Butler, Miller, Paxton, Schwerda, Fischer and Hutchinson. That has much more detail on each individual joint.