Multiscale framework. Concept of geometry, materials, load conditions, and homogenization

The chapter describes the multiscale framework used in this book to study the fibre-reinforced composites based on a polymer matrix. The main objective is that the user becomes familiar with the framework and the models studied along the book. Three different scales are identified within the continuum mechanic approach: micro, meso, and macroscale. The geometry, materials of the constituents, and load conditions are described for each scale. Then, the bridge between scales is also studied with the computational homogenization methodology. Although the chapter introduces general concepts for new users, advanced features of the models for each scale are also discussed.