Journal
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
Volume 195, Issue -, Pages 43-56Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijsolstr.2020.03.017
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Funding
- National Science Foundation [CMMI-1538658]
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The swelling and drying behavior of a gelatin-glycerol-water hydrogel are examined experimentally for different compositions and different environmental conditions. Significant asymmetry in the swelling and drying kinetics is observed from these measurements. The early time measurements are interpreted first within the context of a linear poroelastic theory, but a fully nonlinear Flory-Rehner theory is required in order to capture the long time behavior. Comparison of the experimental measurements with simulations based on both the linear and nonlinear constitutive models yields a consistent calibration of the material parameters of the models. (C) 2020 Elsevier Ltd. All rights reserved.
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