期刊
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
卷 141, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijnonlinmec.2022.103951
关键词
Bulk contraction; Active gels; Stress-diffusion; Mechanics
类别
资金
- MIUR (Italian Ministry for Education, Research, and University), Italy
- (University) , Italy through PRIN
- MAECI (Italian Ministry for Foreign Affairs and International Cooperation) through PAMM project
- Italian National Group of Mathematical Physics (GNFM-INdAM)
- [2017 KL4EF3]
This study highlights the differences between growth-by-diffusion, which is based on elastic stretch, and growth-by-activity, which involves network remodeling, in polymer gels. Using a multiphysics continuum model, the study examines the interactions between mechanics, diffusion, and growth through a system of nonlinear partial differential equations. The researchers discuss the distinctions between growth-by-diffusion and growth-by-activity and demonstrate how controlling the distribution of activation sources can create a wide variety of three-dimensional shapes.
The study aims to highlight the differences between growth-by-diffusion, based on the elastic stretch of the polymeric network, and growth-by-activity, based on the remodeling of the network, in polymer gels. The study is based on a multiphysics continuum model, which allows to describe the interactions between mechanics, diffusion and growth through a system of nonlinear partial differential equations. We discuss the differences between growth-by-diffusion and growth-by-activity and evidence the role of the corresponding characteristic times in the case of homogeneous activation source. We also show as a huge variety of three-dimensional shapes can be generated by controlling the distribution of the activation sources.
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