Hyperelastic modeling of solid methyl cellulose hydrogel under quasi-static compression

Orel Guetta; Daniel Rittel

doi:10.1016/j.jmbbm.2021.104857

Hyperelastic modeling of solid methyl cellulose hydrogel under quasi-static compression

J Mech Behav Biomed Mater. 2021 Dec:124:104857. doi: 10.1016/j.jmbbm.2021.104857. Epub 2021 Sep 27.

Authors

Orel Guetta¹, Daniel Rittel²

Affiliations

¹ Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, 3200008 Haifa, Israel. Electronic address: orel-gueta@campus.technion.ac.il.
² Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, 3200008 Haifa, Israel.

PMID: 34619636
DOI: 10.1016/j.jmbbm.2021.104857

Abstract

Constitutive modeling of solid methyl cellulose (MC) hydrogels under quasi-static uniaxial compression is presented for a variety of compositions and test temperatures. Five constitutive models of varying complexity are examined, with the aim to identify the simplest accurate material representation. Due to the viscosity of the gel, the models were calibrated using compression tests only, with restrictions that ensure stability for other loading modes. It is found that of all the tested models, the second order polynomial constitutive model fulfills the requirements of simplicity and accuracy both for compression and predicted tension.

Keywords: Hyperelastic modeling; Quasi-static compression; Solid methylcellulose gel.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Hydrogels*
Methylcellulose*
Pressure
Stress, Mechanical
Viscosity

Substances

Hydrogels
Methylcellulose