ABSTRACT

This chapter introduces types of motion structures that are constructed by tessellation of the Bennett linkage. The Bennett linkage has its four links spanning the shortest distance between the axes of the neighbouring revolute joints. The chapter demonstrates that modifications can be carried out to an equilateral Bennett linkage so that compact folding becomes possible. To design for compact packaging, an equilateral Bennett linkage is drawn in three dimensions. The chapter discusses the relationship linking the design parameters to the geometric parameters of the alternative form of the Bennett linkage. The Bennett linkage in its alternative forms can also be used to construct large mobile assemblies with the same layout as that for the linkage in its original form. One obvious application of the spatial assembly of Bennett linkages is as the frame structure of rapidly erectable shelters because of its ability to form a curved profile.