Data · dataset · 2026
Small-Strain Tensile Characterization and Finite Element Calibration of Sodium Alginate-Based Biomimetic Artificial Muscle Strips
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This study investigates the small-strain tensile response and finite element calibration of sodium alginate-based biomimetic artificial muscle strips and extends the calibrated mechanics to an electro-ionic-mechanical model.
Description
The Ni-doped formulation was selected from our previous optimization of actuation and electrochemical performance. Quasi-static uniaxial tensile tests were performed on three undoped and three Ni-doped specimens.
Equivalent moduli were extracted over 0–5% engineering strain, where both groups showed approximately linear responses. The undoped and Ni-doped groups exhibited moduli of 0.975 ± 0.212 MPa and 1.118 ± 0.474 MPa. With n = 3 per group, the between-group comparison was inconclusive (Welch’s <i>t</i> test, <i>p</i> ≈ 0.67) and should not be interpreted as evidence of equivalence.
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A two-dimensional plane-stress model was calibrated against the group-level tensile responses. The model reproduced the initial stiffness and showed stress concentration near the fixed end and interlayer transition regions. The calibrated mechanical framework was extended under 3 V excitation by coupling electrostatics, ion transport, differential swelling, and solid mechanics.
The multiphysics model reproduced the overall 0–1000 s output-force evolution with an RMSE of 0.0992 mN, an MAE of 0.0757 mN, R<sup>2</sup> = 0.8152, and a plateau-force error of 3.76%. These results provide experimentally based mechanical parameters and a computational framework for subsequent voltage-dependent studies.
Links
Where it is published
- DOI doi.org/10.1021/acsomega.6c03650.s001 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
- From keywords
- Earth & Environmental Science · Engineering · Life Sciences · Medicine & Health · Plant biology · Solid mechanics
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/34018293 | 6 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].anzsrc:field:401707 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['solid mechanics'] |
| concepts[field].anzsrc:group:3108 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Plant Biology'] |
| concepts[field].local:field:earth-environmental | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:engineering | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:medicine-health | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| description | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/description |
| license | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/rights |
| publication_date | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |