INTERFACE STABILITY UNDER BIAXIAL LOADING OF BILAYERED SHEETS BETWEENRIGID SURFACES .2. STABILITY OF PERTURBATIONS

The bifurcation analysis of a bilayered sheet between rigid surfaces u nder biaxial loading (Alcaraz el al., 1997) is continued here by consi dering the stability analysis of the emerging undulations near the int erface in the spacially periodic mode. Assuming an initial perturbatio n along the interface, conditions preventing the growth of this pertur bation are studied. With this aim, a stability parameter is introduced . The influence on this parameter of the geometric and material variab les is discussed in detail. It is also shown that stability strongly d epends on the constitutive model assumed in the computations. Copyrigh t (C) 1996 Elsevier Science Ltd.