Plasticity Theory at Small Scales
نویسنده
چکیده
منابع مشابه
Stability of higher derivative modifications of Einstein - aether theory
A time-like unit vector field is used to generalize Einstein's gravity. The resulting theory, called the Einstein-aether theory, consists of a minimal coupling between an aether field and gravity. Inspired by the Bopp-Podolsky electrodynamics, which is well-known for removing the singularity at the point charge, we generalized the Einstein-aether theory by adding such a higher order self-intera...
متن کاملElastoplastic Buckling Analysis of Plates Involving Free Edges by Deformation Theory of Plasticity (RESEARCH NOTE)
Abstract In this paper elastoplastic buckling of rectangular plates with different boundary conditions are investigated. Differential governing equations of plate are obtained on the basis of general loading and according to deformation theory (DT) of plasticity. Various loading conditions contain uniaxial, biaxial and shear are studied. The employed material is AL7075T6 which is usually used...
متن کاملThe finite deformation theory of Taylor-based nonlocal plasticity
Recent experiments have shown that metallic materials display significant size effect at the micron and sub-micron scales. This has motivated the development of strain gradient plasticity theories, which usually involve extra boundary conditions and possibly higher-order governing equations. We propose a finite deformation theory of nonlocal plasticity based on the Taylor dislocation model. The...
متن کاملPhenotypic Plasticity Opposes Species Invasions by Altering Fitness Surface
Understanding species invasion is a central problem in ecology because invasions of exotic species severely impact ecosystems, and because invasions underlie fundamental ecological processes. However, the influence on invasions of phenotypic plasticity, a key component of many species interactions, is unknown. We present a model in which phenotypic plasticity of a resident species increases its...
متن کاملThe Mechanics of Size!dependent Indentation
Indentation tests at scales on the order of one micron have shown that measured hardness increases signi_cantly with decreasing indent size\ a trend at odds with the size!independence implied by conventional plasticity theory[ In this paper\ strain gradient plasticity theory is used to model materials undergoing small!scale indentations[ Finite element implementation of the theory as it pertain...
متن کامل