Behavior of Rubber under Repeated Stresses

Abstract The stress-strain relations of a sample of rubber are very markedly affected by the previous strain history. Rubber will recover to some extent from the effects of a strain, but not completely. In a rubber compound, such as tread stock, a series of increasing strains has a pronounced progressive action, each increase in strain producing added effects. The conventional stress-strain curve does not represent the permanent characteristics of a rubber compound.