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.

CMS-0527906蜂窝固体材料是一类轻质材料，具有高的刚性比和强度比、优异的吸能性能、优异的隔热和隔声性能。发泡和其他制造工艺的进步使泡沫塑料能够制造到规定的泡孔尺寸和密度。为了充分发挥这项技术的潜力，基材的晶胞大小、密度和特性还必须与机械、热、声和流动特性相关。大多数泡沫塑料的压缩响应具有弹性区域的特征，该区域终止于极限载荷，然后是扩展载荷平台。在负载平台期结束时，响应再次变硬。负载平台是它们出色的能量吸收能力的原因。本项目的目的是利用实验和分析来开发将基材的微结构和性能与金属开孔泡沫的所有相关力学性能相关联的模型。