Mathematical Sciences: "Variational Problems from Nonlinear Elasticity in Several Space Dimensions"

数学科学：“多维空间非线性弹性的变分问题”

• 批准号: 9112884
• 负责人: Patricia Bauman
• 金额: $ 6.65万
• 依托单位: Purdue Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-07-01 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9112884&HistoricalAwards=false
• 关键词: Mathematical; Sciences; Variational; Problems; Nonlinear

In this project the principal investigator will examine several problems involving nonlinear elliptic systems of partial differential equations in two and three space dimensions. The specific systems to be considered come from the theory of nonlinear elasticity, and the principal investigator will study the properties of solutions that are the energy minimizers of the associated variational problems. Her primary goal is to determine various regularity properties of solutions and to examine their qualitative behavior. The main tools to be used are previous results of the principal investigator concerning maximum principles and a'priori estimates. The solutions of many problems that describe physical reality are what mathematicians call "variational" solutions, that is, the correct physical solution is the mathematical solution of a variational problem. In ordinary language, a variational solution is one that maximizes or minimizes a fundamental quantity like the total energy of a system. For example, the bubbles in your glass of beer are spherical, because the spherical shape minimizes the surface energy. In this project the principal investigator will study various mathematical properties of solutions of variational problems that model two- and three-dimensional nonlinear elastic phenomena.

在这个项目中，首席研究员将研究涉及二维和三维空间中的非线性椭圆型偏微分方程组的几个问题。要考虑的具体系统来自于非线性弹性理论，主要研究者将研究作为相关变分问题的能量最小化的解的性质。她的主要目标是确定解的各种正则性，并检查它们的定性行为。将使用的主要工具是主要研究者关于最大值原理和先验估计的先前结果。许多描述物理现实的问题的解都是数学家所说的变分解，即正确的物理解是变分问题的数学解。在普通语言中，变分解是指最大化或最小化一个基本量，如系统的总能量。例如，你的啤酒中的气泡是球形的，因为球形可以最大限度地减少表面能量。在这个项目中，首席研究员将研究模拟二维和三维非线性弹性现象的变分问题解的各种数学性质。