The Existence of Interfacial Couples in Infinitesimal Elasticity



The existence of interfacial couples in general crystalline media is established and an extension of the Cauchy stress principle is formulated in this paper. A strict method of treating the homogeneous deformation of an infinite lattice is also presented. The relevance of interfacial couples in the theory of elasticity is discussed together with a critical survey of the recent work in this field.