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优化用于层压板冲击防护的非牛顿流体。

Optimizing non-Newtonian fluids for impact protection of laminates.

作者信息

Richards James A, Hodgson Daniel J M, O'Neill Rory E, DeRosa Michael E, Poon Wilson C K

机构信息

Edinburgh Complex Fluids Partnership, School of Physics and Astronomy, The University of Edinburgh, James Clerk Maxwell Building, Peter Guthrie Tait Road, Edinburgh EH9 3FD, United Kingdom.

Science and Technology Division, Corning Incorporated, Corning, NY 14831.

出版信息

Proc Natl Acad Sci U S A. 2024 Mar 5;121(10):e2317832121. doi: 10.1073/pnas.2317832121. Epub 2024 Feb 27.

DOI:10.1073/pnas.2317832121
PMID:38412136
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10927517/
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.

摘要

非牛顿流体可用于保护柔性层压板。为了优化此功能，有必要了解保护流体的流动与被保护固体变形之间的耦合关系。我们基于一个单一的耦合变量——平板刚性板之间挤压流动的有效宽度，对该问题进行了尺度分析，并预测通过使用剪切变稀而非剪切增稠流体可优化层压板的抗冲击保护。通过在冲击实验中测量速度和压力，实验验证了这一预测。我们的尺度分析应普遍适用于各种应用中的非牛顿流体与固体的相互作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ac9/10927517/7575d8a9cd68/pnas.2317832121fig05.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ac9/10927517/b65c581e92cf/pnas.2317832121fig01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ac9/10927517/f1446affd80e/pnas.2317832121fig02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ac9/10927517/a896a6fb7589/pnas.2317832121fig03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ac9/10927517/cccfbec3e480/pnas.2317832121fig04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ac9/10927517/7575d8a9cd68/pnas.2317832121fig05.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ac9/10927517/b65c581e92cf/pnas.2317832121fig01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ac9/10927517/f1446affd80e/pnas.2317832121fig02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ac9/10927517/a896a6fb7589/pnas.2317832121fig03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ac9/10927517/cccfbec3e480/pnas.2317832121fig04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ac9/10927517/7575d8a9cd68/pnas.2317832121fig05.jpg

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Shear Thickening and Jamming of Dense Suspensions: The "Roll" of Friction.浓悬浮液的剪切增稠和堵塞：摩擦的“作用”
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