Optimizing non-Newtonian fluids for impact protection of laminates

• 成果类型: Article
• 署名作者: Richards, James A.; Hodgson, Daniel J. M.; O'Neill, Rory E.; Derosa, Michael E.; Poon, Wilson C. K.
• 署名单位: University of Edinburgh; State University of New York (SUNY) System; SUNY Community College; Corning Inc
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-10285
• DOI: 10.1073/pnas.2317832121
• 发表日期: 2024-03-05
• 关键词: fumed silica; FLOW; suspensions; rheology; BEHAVIOR; stress

摘要

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.