Deformation of adaptive materials. Part II. Adaptive composite

摘要

A new class of materials, layer composites containing adaptive polydomain components, is considered. Polydomain structures can be the result of constrained phase transformation. Polydomain structures consist of periodically alternating layers of different stable and metastable phases (heterophase polydomain) or differently oriented domains of product phase (e.g. polytwin). The domain interface movement enables an additional mode of deformation. The theory predicts unusual physical and mechanical properties of composites, particularly, considerable decrease of the effective elastic moduli of composites, nonlinear stress-strain relations, and critical behavior at small thickness of an active layer.