A fully modularized framework was established to combine isotropic, kinematic, and cross hardening behaviors under non-monotonic loading conditions. Three sets of state variables were defined and applied to consider the effects of, a) loading history, b) twinning and de-twinning and c) different pre-strain. Experiments under two types of nonproportional loading conditions were conducted along d...

This paper investigates the plastic deformation in mono-crystalline silicon under complex loading conditions. With the aid of various characterization techniques, it was found that the mechanism of plasticity in silicon is complex and depends on loading conditions, involving dislocations, phase transformations and chemical reactions. In general, plastic deformation in silicon is the coupled res...

The purpose of this article is to present applications of optimal control theory in order to solve inverse problems in non linear mechanics. The constitutive equations of the material is known. In the first class of inverse problem, knowing the initial state and the final state of the body, we propose a method to estimate the history of loading and the internal state such as plastic strains kno...

Two-dimensional, numerical models of a linear fault embedded within a linear elastic medium show the generation of off-fault tensile failure that results from inelastic slip along the fault. We explore quasistatic models with slip-weakening friction to assess the effects of spatially and temporally variable friction on the damage patterns. Tensile fractures form where tangential normal stresses...

Existing input domain-based reliability models do not account for software reliability growth, because they do not consider fault corrections. This paper proposes an input domain-based reliability growth model with fault correction history being taken into account. Both partition and random testing can be used to generate input cases for test runs. It is generally considered in the model that i...

BACKGROUND lower-limb stress fracture is one of the most common types of running injuries. There have been several studies focusing on the association between stress fractures and biomechanical factors. In the current study, the ground reaction force and loading rate are examined. There is disagreement in the literature about whether the history of stress fractures is associated with ground rea...