Research Interests
Continuum mechanics; plastic deformation of crystals; material instabilities; interface mechanics; atomic-level properties and phonons; interface waves; fracture mechanics; polymer deformation and fracture.

Current Research Projects
Interface Mechaniccs

The relationship between discrete and continuum properties of heterogeneous solids is studied, in particular the spatially-varying, anisotropic elastic properties of interfaces. Idealized continuum models of interfaces are developed and used to generate solutions for interface waves which can reproduce important features of bicrystal phonons.

Plastic Deformation of Crystals

Multislip plastic deformation of single crystals, bicrystals, polycrystals, and multiphase materials is investigated in both disordered and ordered compounds. Strain localization and associated patterning such as coarse slip bands are studied. Nonlocal effects that give rise to patterning are introduced in terms of lattice distortion.

Fracture Mechanics

Fracture along interfaces between ductile and brittle solids is studied under mixed-mode loading (tension v. shear) and high-temperature conditions. Models for crack propagation due to cavitation, oxidation, and dynamic embrittlement are developed.

Selected Publications

• Bassani, J. L., Adv. Appl. Mech. 30, 191-258 (1994). "Plastic Flow of Crystals."
• Peralta, P., Llanes, L., Bassani, J.L., and Laird, C., Phil. Mag. A 70, 219-234 (1994). "Deformation from Twin Boundary Stress Concentration and the Role of Texture."
• Alber, E. S., Bassani, J. L., Vitek, V. and Wang, G. J., Modelling Sim. Mat. Sci. Eng. 2, 455-472 (1994). "Stoneley Waves and Grain BoundaryPhonons."
• Qu, J. and Bassani, J. L., J. Appl. Mech. 60, 422-431 (1993)."Interfacial Fracture Mechanics for Anisotropic Bimaterials."

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