Person:
Goldman, Daniel I.

Permanent Link
https://hdl.handle.net/1853/71298
Associated Organization(s)
Organizational Unit
ORCID
ArchiveSpace Name Record

Filters

2019 - 2019 1 2020 - 2022 1
2 2
2
Reset filters

Settings
Author: Goldman, Daniel I. × Author: Rocklin, D. Zeb × Start date: 2019 × Item Type: Publication × Has files: Yes ×

Publication Search Results

Now showing 1 - 2 of 2
No Thumbnail Available
Item

Data for 'Locomotion without force, and impulse via dissipation: Robotic swimming in curved space via geometric phase'

2022 , Li, Shengkai , Wang, Tianyu , Kojouharov, Velin H. , McInerney, James , Aydin, Enes , Aydin, Yasemin O. , Goldman, Daniel I. , Rocklin, D. Zeb

View
No Thumbnail Available
Item

Tracked data for Chionactis occipitalis through a post array

2019-01-25 , Schiebel, Perrin E. , Rieser, Jennifer M. , Hubbard, Alex M. , Chen, Lillian , Rocklin, D. Zeb , Goldman, Daniel I.

Limbless animals like snakes inhabit most terrestrial environments, generating thrust to overcome drag on the elongate body via contacts with heterogeneities. The complex body postures of some snakes and the unknown physics of most terrestrial materials frustrates understanding of strategies for effective locomotion. As a result, little is known about how limbless animals contend with unplanned obstacle contacts. We studied a desert snake, Chionactis occipitalis, which uses a stereotyped head-to-tail traveling wave to move quickly on homogeneous sand. In laboratory experiments, we challenged snakes to move across a uniform substrate and through a regular array of force sensitive posts. The snakes were reoriented by the array in a manner reminiscent of the matter-wave diffraction of subatomic particles. Force patterns indicated the animals did not change their self-deformation pattern to either avoid or grab the posts. A model using open-loop control incorporating previously described snake muscle activation patterns and body-buckling dynamics reproduced the observed patterns, suggesting a similar control strategy may be used by the animals. Our results reveal how passive dynamics can benefit limbless locomotors by allowing robust transit in heterogeneous environments with minimal sensing.

View