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Optimizing non-Newtonian fluids for impact protection of laminates.

ABSTRACT: Non-Newtonian fluids can be used for the protection of flexible laminates. Understanding the coupling between the flow of the protecting fluid and the deformation of the protected solids is necessary in order to optimize this functionality. We present a scaling analysis of the problem based on a single coupling variable, the effective width of a squeeze flow between flat rigid plates, and predict that impact protection for laminates is optimized by using shear-thinning, and not shear-thickening, fluids. The prediction is verified experimentally by measuring the velocity and pressure in impact experiments. Our scaling analysis should be generically applicable for non-Newtonian fluid-solid interactions in diverse applications.

SUBMITTER: Richards JA

PROVIDER: S-EPMC10927517 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

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Optimizing non-Newtonian fluids for impact protection of laminates.

Richards James A JA Hodgson Daniel J M DJM O'Neill Rory E RE DeRosa Michael E ME Poon Wilson C K WCK

Proceedings of the National Academy of Sciences of the United States of America 20240227 10

Non-Newtonian fluids can be used for the protection of flexible laminates. Understanding the coupling between the flow of the protecting fluid and the deformation of the protected solids is necessary in order to optimize this functionality. We present a scaling analysis of the problem based on a single coupling variable, the effective width of a squeeze flow between flat rigid plates, and predict that impact protection for laminates is optimized by using shear-thinning, and not shear-thickening, ...[more]

PMID: 38412136

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