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Title: Pattern switching in soft cellular structures and hydrogel-elastomer composite materials under compression
Authors: Hu, Jianying
Zhou, Yu
Liu, Zishun
Ng, Teng Yong
Keywords: Composite Hydrogel–elastomer Materials
Soft Periodic Structures
Issue Date: 2017
Source: Hu, J., Zhou, Y., Liu, Z., & Ng, T. Y. (2017). Pattern switching in soft cellular structures and hydrogel-elastomer composite materials under compression. Polymers, 9(12), 229-.
Series/Report no.: Polymers
Abstract: It is well known that elastic instabilities induce pattern transformations when a soft cellular structure is compressed beyond critical limits. The nonlinear phenomena of pattern transformations make them a prime candidate for controlling macroscopic or microscopic deformation and auxetic properties of the material. In this present work, the novel mechanical properties of soft cellular structures and related hydrogel–elastomer composites are examined through experimental investigation and numerical simulations. We provide two reliable approaches for fabricating hydrogel–elastomer composites with rationally designed properties and transformed patterns, and demonstrate that different geometries of the repeat unit voids of the periodic pattern can be used to influence the global characteristics of the soft composite material. The experimental and numerical results indicate that the transformation event is dependent on the boundary conditions and material properties of matrix material for soft cellular structures; meanwhile, the deformation-triggered pattern of matrix material affects the pattern switching and mechanical properties of the hydrogel–elastomer material, thus providing future perspectives for optimal design, or serving as a fabrication suggestion of the new hydrogel–elastomer composite material.
DOI: 10.3390/polym9060229
Rights: © 2017 The Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles


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