Thermomechanical Behavior of Shape-Memory Single Crystals and Polycrystals

形状记忆单晶和多晶的热机械行为

• 批准号: 9625304
• 负责人: George Weng
• 金额: $ 20万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-08-15 至 2001-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9625304&HistoricalAwards=false
• 关键词: Thermomechanical; Behavior; Shape; Memory; Single

9625304 Weng This project is to study the thermomechanical behavior in both single crystal and polycrystalline versions of shape-memory alloys (SMA). To make best use of these materials it is important that their behavior be modeled with precision. Thus constitutive equations that capture the phase transformations under thermal/mechanical loading, must be used. The phase transformations are thermoelastic in nature and are therefore driven by the thermodynamic forces of the system which is inherently a two phase one. A combined theoretical/experimental program will consider the three dimensional martensite-plate morphology as well as the shear and dilatational components of the transformation strains. ***

9625304 Weng该项目是研究形状记忆合金（SMA）单晶和多晶版本的热机械行为。 为了充分利用这些材料，重要的是要精确地模拟它们的行为。 因此，必须使用捕获热/机械载荷下的相变的本构方程。 相变本质上是热弹性的，因此由系统的热力学力驱动，该系统本质上是两相系统。 一个综合的理论/实验方案将考虑三维马氏体板的形态，以及剪切和相变应变的剪切分量。 ***