报告题目：Understanding material microstructure
报告人：John Ball, Heriot-Watt University and Maxwell Institute for Mathematical Sciences, Edinburgh
报告时间：July 31, 2024 (Wednesday) 10:00
报告地点：Room 209, Zhengxin Building, Central Campus
报告摘要：Under temperature changes or loading, alloys can form beautiful patterns of microstructure that largely determine their macroscopic behaviour. These patterns result from phase transformations involving a change of shape of the underlying crystal lattice, together with the requirement that such changes in different parts of the crystal fit together geometrically. Similar considerations apply to plastic slip. The lecture will explain both successes in explaining such microstructure mathematically, and how resolving deep open questions of the calculus of variations could lead to a better understanding.
报告人简介：
John Ball is a professor at Heriot-Watt University and Maxwell Institute for Mathematical Sciences, Edinburgh. He is a fellow of the Royal Society, the European Academy of Sciences, the American Mathematical Society, the Royal Academy of Edinburgh, a foreign academician of the French Academy of Sciences, and a foreign academician of the Norwegian Academy of Sciences. He served as Chairman of the Fields Medal Committee (2006), Chairman of the International Mathematical Union (2003-2006), Member of the Executive Committee of the International Mathematical Union (2007-2010), Member of the Jury of the First Abel Prize Committee, and Chairman of the Edinburgh Mathematical Society. and President of the London Mathematical Society. He was knighted by Queen Elizabeth II in 2006. He has made outstanding contributions in the fields of variational calculus, partial differential equations, infinite-dimensional dynamic systems and their applications in nonlinear mechanics, mathematical theory of nonlinear elastic mechanics, and mathematical theory of liquid crystals. He has published more than 100 academic papers and many academic monographs. He currently serves as the editor-in-chief and editorial board member of several internationally renowned academic journals.
