Over 40 years ago, the author once faced with several strength and vibration problems related to the structural mechanics and solid mechanics in the design, manufacturing and operating of machines and tried to solve these failure problems and to improve the working of machines. It was found that three aspects are important, that is, the configuration and constraint, the nature of external loading and the properties of structural materials. They are actually based on three elements in the Newtonian mechanics: the loading $F$, the mass of matter $m$ and the acceleration of motion $a$, and the linking between them. This framework can be extended to describe the analysis of solid mechanics. The research framework is further extended in the 1970s, the 1990s and the early 21st century, as shown in Figures 1,2,3. In recent years, the analytical methodology has already extended to more extensive scientific and technological territory and the coupling between the different disciplines asks people to discover new development directions. Smaller and larger scales in space-time will be considered, as well as the process of information and data production and transformation, and the motion of living matters under conventional or extreme loading environment. These new fields can be expected to open for future solid mechanics.