ABSTRACT
In this report, passive elasticity properties of Octopus rubescens arm tissue are investigated using a multidisciplinary approach encompassing biomechanical experiments, computational modeling, and analyses. Tensile tests are conducted to obtain stress–strain relationships of the arm under axial stretch. Rheological tests are also performed to probe the dynamic shear response of the arm tissue. Based on these tests, comparisons against three different viscoelasticity models are reported.
Footnotes
Author contributions
Conceptualization: U.H., E.D.G.; Methodology: U.H., E.D.G.; Software: U.H., E.D.G.; Formal analysis: U.H., E.D.G.; Investigation: U.H., E.D.G.; Data curation: U.H., E.D.G.; Writing - original draft: U.H., E.D.G.; Writing - review & editing: U.H., E.D.G., R.G., P.G.M.; Visualization: U.H., E.D.G.; Supervision: R.G., P.G.M.; Funding acquisition: R.G., P.G.M.
Funding
The authors gratefully acknowledge financial support from the Office of Naval Research (ONR MURI N00014-19-1-2373).
Data availability
Details of the arm samples used in the tensile and rheology experiments, the statistics and model fitting, and source codes are provided in the supplementary information.
