Tham khảo tài liệu 'the coming of materials science episode 3', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 50 The Coming of Materials Science mechanics to the study of crystal slip in single crystals and its interpretation in terms of the elastic theory of interaction between defects leading to insights that are specific to particular materials. There is some degree of a meeting of minds in the middle between the mathematicians and mechanical engineers on the one side and the metallurgists physicists and materials scientists on the other but it is also true to say that continuum mechanics and what might for want of a better term be called atomistic mechanics have remained substantially divergent approaches to the same set of problems. One is a part of mechanical engineering or more rarefied applied mathematics the other has become an undisputed component of materials science and engineering and the two kinds of specialists rarely meet and converse. This is not likely to change. Another subsidiary domain of mechanics which has grown in stature and importance in parallel with the evolution of polymer science is rheology the science of flow which applies to fluids gels and soft solids. It is an engaging mix of advanced mathematics and experimental ingenuity and provides a good deal of insight specific to particular materials polymers in particular. A historical outline of rheology with concise biographical sketches of many of its pioneers has been published by Tanner and Walters 1998 . Very recently people who engage in computer simulation of crystals that contain dislocations have begun attempts to bridge the continuum atomistic divide now that extremely powerful computers have become available. It is now possible to model a variety of aspects of dislocation mechanics in terms of the atomic structure of the lattice around dislocations instead of simply treating them as lines with macroscopic properties Schiotz et al. 1998 Gumbsch 1998 . What this amounts to is linking computational methods across different length scales Bulatov et al. 1996 . We will return to this briefly
