Constitutive Modeling for Mechanical Response of Ionomer-Based Nano-Phase Composite Laminates

基于离聚物的纳米相复合材料层压板机械响应的本构模型

• 批准号: 0408807
• 负责人: Kenneth Reifsnider
• 金额: $ 4万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0408807&HistoricalAwards=false
• 关键词: Constitutive; Modeling; Mechanical; Response; Ionomer

CMS 0408807 Constitutive Modeling for Mechanical Response of Nano-Phase Composite Laminates Ken Reifsnider and Xinyu Huang Global Fuel Cell Center, ME Department, UCONN Abstract A major concentration of the national initiative to develop fuel cell power systems is focused on Proton Exchange Membrane (PEM) cells, which use polymer-based composite laminates and membranes. Durability has been identified by several current national studies as the most important barrier to progress in this important enterprise, so the question of mechanical behavior is an essential issue. The present program will address three high risk aspects of this barrier. It will make the first attempt to construct constitutive concepts for the fully nonlinear and anisotropic mechanical response of ionomeric membranes, attempt to identify a failure criterion for such membranes, and identify the strain-rate dependence of that failure criterion using classical stress-rupture concepts. The broader impact of this program will be to remove a critical barrier to the design of durable fuel cells to enable a sustainable society by introducing the findings of the program into courses taught by the Connecticut Global Fuel Cell Center.

CMS 0408807纳米相复合材料机械响应的组成型建模层压板层ken Reifsnider和Xinyu Huang全球燃料电池中心，ME部门，UCONN摘要摘要开发燃料电池动力系统的国家主动性的主要集中精力用于使用Protonexplane Mexchemant（Pembrane Mexsement and Membranes and Membrans和Membrans）和Membrans和Membrans和Membrans和Membrans和Membrans和Membrans和Membran lamines和Membrans和Membrans和Membrans limbran limarines and Membrans limarines和Membrans。 当前的一些国家研究已将耐久性确定为这项重要企业中进步的最重要障碍，因此机械行为问题是一个必不可少的问题。本计划将解决此障碍的三个高风险方面。 它将首次尝试为离子膜的完全非线性和各向异性机械响应构建构型概念，尝试使用经典应力破裂概念来识别该膜的故障标准，并确定该失败标准的应变率依赖性。 该计划的更广泛的影响是消除耐用燃料电池设计的关键障碍，以通过将该计划的发现引入康涅狄格州全球燃料电池中心教授的课程中，从而实现可持续的社会。