On the Crushing Response of Cellular Materials

多孔材料的破碎反应

• 批准号: 0527906
• 负责人: Stelios Kyriakides
• 金额: $ 34.77万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0527906&HistoricalAwards=false
• 关键词: Crushing; Response; Cellular; Materials

Abstract CMS-0527906Cellular solids is a class of light weight materials with unique properties such as high stiffness- and strength-to-weight ratios, excellent energy absorption characteristics and exceptional insulation and acoustic properties. Advances in foaming and other manufacturing processes enable foam manufacture to prescribed cell sizes and densities. For this technology to reach its full potential, the cell size, density and properties of the base material must also be related to the mechanical, thermal, acoustic, and flow properties. The compressive response of most foams is characterized by an elastic regime which terminates into a limit load followed by an extended load plateau. At the end of the load plateau the response hardens again. The load plateau is responsible for their excellent energy absorption. The aim of this project is to use experiment and analysis to develop models which relate the microstructure and the properties of the base material to all relevant mechanical properties of metallic open cell foams.

摘要CMS-0527906细胞固体是一类轻质材料，具有独特的特性，例如高刚度和强度 - 重量比，出色的能量吸收特性以及出色的绝缘和声学特性。泡沫和其他制造过程的进步使泡沫制造能够规定的细胞尺寸和密度。为了使该技术达到其全部潜力，基本材料的细胞大小，密度和特性也必须与机械，热，声学和流量性能有关。大多数泡沫的压缩响应的特征是弹性状态终止于极限载荷，然后是延长的负载高原。在负载高原结束时，响应再次变硬。负载高原负责它们的出色能量吸收。该项目的目的是使用实验和分析来开发将微观结构和基本材料的特性与金属开放式细胞泡沫的所有相关机械性能相关联的模型。