材料的微结构演化和长程驱动力

Significant progresses are obtained in mechachtronic mass flow instabilityand structural evolution, microstructural design by topology optimization under.multiple constraints, microstructural evolution of nanocrystalline materials, anddislocation generation and grain boundary formation under surface nanocrystallization.A theoretical framework of microstructural evolution and long range force inmaterials is stablished, as well as the development of a numerical scheme. Theresearch data is collected to form an English monograph, and the invited lecture (onehour) in the 50th anniversary of Japanese Society of Material Sciences.

材料微结构演化动力学是细观力学研究领域的延伸。研究内容包括：可兼顾能量传递和速率过程的演化动力系统框架；把描述材料流动和形貌演化的有限元新算法与力学场分析有限元耦联的计算力学方法；及在三维晶粒形貌演化、电迁移下内导线流动失稳、薄膜凹陷方面的应用。研究刻划微结构之间相互作用的物理长程力及其在薄膜失稳和微点阵列中的应用。