Advances of FEM-MDS Coupling Modeling and Its Applicationin Numerical Simulation of Material Processing

摘要

Most of objects are multi-scale systems. At the local micro area the rules and phenomenacan be simulated by MD, while the other area can be described by macro continuum media mechanicstheories. For example, the process of nano-cutting, nano-scale friction and abrasion, and crackgeneration and spreading are all abide this rules. Based on these features, the advances of FEM-MDScoupling model of solid at the macro- and micro- scale and its applications in material processing arereviewed in this paper. The emphasis and difficulties of macro- and micro- scale coupling model arehow to transact the boundaries between them. And its application in material processing includes onnano-cutting, nano-scale friction and abrasion, dislocation emission, crack generation and extensionetc. These theories and applications are introduced in this article. At last, some considerations offuture FEM-MDS coupling modeling methods and applications are prospected.