On the Crushing Response of Cellular Materials

摘要CMS-0527906多孔固体是一类轻质材料，具有独特的性能，如高刚度和强度重量比，优异的能量吸收特性和特殊的绝缘和声学性能。发泡和其他制造工艺的进步使泡沫塑料的制造能够达到规定的泡孔尺寸和密度。为了使这项技术充分发挥其潜力，基础材料的单元尺寸、密度和性能还必须与机械、热、声学和流动性能相关。大多数泡沫的压缩响应的特征在于弹性状态，该弹性状态终止于极限载荷，随后是扩展的载荷平台。在负载平稳期结束时，响应再次变硬。负载平台是其出色的能量吸收的原因。该项目的目的是利用实验和分析来开发模型，将基础材料的微观结构和性能与金属开孔泡沫的所有相关机械性能联系起来。

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.