Elasticity-Controlled Jamming Criticality in Soft Composite Solids
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arXiv
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866913388969328640 |
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| author | Zhao, Yiqiu Hu, Haitao Huang, Yulu Liu, Hanqing Yan, Caishan Xu, Chang Zhang, Rui Wang, Yifan Xu, Qin |
| author_facet | Zhao, Yiqiu Hu, Haitao Huang, Yulu Liu, Hanqing Yan, Caishan Xu, Chang Zhang, Rui Wang, Yifan Xu, Qin |
| contents | Soft composite solids are made of inclusions dispersed within soft matrices. They are ubiquitous in nature and form the basis of many biological tissues. In the field of materials science, synthetic soft composites are promising candidates for building various engineering devices due to their highly programmable features. However, when the volume fraction of the inclusions increases, predicting the mechanical properties of these materials poses a significant challenge for the classical theories of composite mechanics. The difficulty arises from the inherently disordered, multi-scale interactions between the inclusions and the matrix. To address this challenge, we systematically investigated the mechanics of densely filled soft elastomers containing stiff microspheres. We experimentally demonstrated how the strain-stiffening response of the soft composites is governed by the critical scalings in the vicinity of a shear-jamming transition of the included particles. The proposed criticality framework quantitatively connects the overall mechanics of a soft composite with the elasticity of the matrix and the particles, and captures the diverse mechanical responses observed across a wide range of material parameters. The findings uncover a novel design paradigm of composite mechanics that relies on engineering the jamming properties of the embedded inclusions. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2308_02354 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Elasticity-Controlled Jamming Criticality in Soft Composite Solids Zhao, Yiqiu Hu, Haitao Huang, Yulu Liu, Hanqing Yan, Caishan Xu, Chang Zhang, Rui Wang, Yifan Xu, Qin Soft Condensed Matter Mesoscale and Nanoscale Physics Materials Science Statistical Mechanics Applied Physics Soft composite solids are made of inclusions dispersed within soft matrices. They are ubiquitous in nature and form the basis of many biological tissues. In the field of materials science, synthetic soft composites are promising candidates for building various engineering devices due to their highly programmable features. However, when the volume fraction of the inclusions increases, predicting the mechanical properties of these materials poses a significant challenge for the classical theories of composite mechanics. The difficulty arises from the inherently disordered, multi-scale interactions between the inclusions and the matrix. To address this challenge, we systematically investigated the mechanics of densely filled soft elastomers containing stiff microspheres. We experimentally demonstrated how the strain-stiffening response of the soft composites is governed by the critical scalings in the vicinity of a shear-jamming transition of the included particles. The proposed criticality framework quantitatively connects the overall mechanics of a soft composite with the elasticity of the matrix and the particles, and captures the diverse mechanical responses observed across a wide range of material parameters. The findings uncover a novel design paradigm of composite mechanics that relies on engineering the jamming properties of the embedded inclusions. |
| title | Elasticity-Controlled Jamming Criticality in Soft Composite Solids |
| topic | Soft Condensed Matter Mesoscale and Nanoscale Physics Materials Science Statistical Mechanics Applied Physics |
| url | https://arxiv.org/abs/2308.02354 |