This chapter presents in the first part the basic methods on how two single spheres can be connected. The cases of a point contact, neck region and matrix embedded are distinguished. A general equation for the calculation of the volume of the neck region between two spheres is analytically derived. In the second part of the chapter, simple model arrangements of spheres, i.e. primitive cubic, body-centered cubic, face-centered cubic and hexagonal are presented. Based on a general introduction of characteristic quantities such as relative density and different volume fractions, equations and reference numbers for characterisation of the model arrangements are collected. A few comments on random arrangements conclude the chapter.
Multifunctional Metallic Hollow Sphere Structures: Manufacturing, Properties and Application p. 31-46