Abstract A subloading-friction model is formulated to describe the smooth transient variation from static friction kinetic friction, recovery after sliding velocity decreases, and accumulation of displacement under cyclic loading contact stress. In past relevant studies, however, formulation used for simulations limited hypoelastic-based plasticity framework, validation test data metal-to-metal...

shear modulus and damping ratio are important input parameters in dynamic analysis. a series of resonant column tests was carried out on pure clays and sand-clay mixtures prepared at different densities to investigate the effects of aggregate content, confining stress, void ratio and clay plasticity on the maximum shear modulus and minimum damping ratio. test results revealed an increase in the...

Activation of cyclic AMP dependent kinase is believed to mediate slow onset, long-term potentiation (LTP) in central neurons. Cyclic-AMP activates a cascade of molecular events leading to phosphorylation of the nuclear cAMP responsive element binding protein (pCREB). Whereas a variety of stimuli lead to activation of CREB, the molecular processes downstream of CREB, which may be relevant to neu...

Co-evolutionary algorithms are able to simulate multiple species evolving in a shared environment. Previously, master tournaments have been employed to establish more accurate fitness measurements, in response to the Red Queen Effect. This study proposes to apply a taximetric cluster analysis to master tournament data. This allows to build a hierarchical ‘family’ tree, based on the phenotypes (...

Abstract This paper presents a unified modelling effort to describe partial phase transformation during cyclic thermo-mechanical loading in Shape Memory Alloys (SMA). To this purpose, three-dimensional (3D) finite strain constitutive model considering TRansformation-Induced Plasticity (TRIP) is combined with modified hardening function enable the accurate and efficient prediction of transformat...

Abstract We aim to enhance the stability of finite element models dynamic structural contact with multiphase granular soils which are described by advanced soil plasticity that can simulate monotonic and cyclic behaviour soils. Often, numerical oscillations cannot be avoided in these cause significantly overshoot stress, leading unrealistic discontinuities stress paths. This situation challenge...

with the expanding demand on application of magnesium alloys in automotive and aerospace industries, robust methods in fatigue characterization of commercially available magnesium alloys with high specific strength is anticipated. in this paper, rotating bending load controlled tests has been studied on specimens machined from an extrusion piece of az31b. due to asymmetric and anisotropic behav...

We describe two experiments performed on a 9-m-radius geotechnical centrifuge to evaluate dynamic soil–structure interaction effects the cyclic failure potential of fine-grained soil. Each experiment incorporated three different structures with range mass and stiffness properties. Structures were founded strip footings embedded in thin layer sand overlying lightly overconsolidated low-plasticit...

Depression is one of the most common and most devastating psychiatric disorders. Despite its high prevalence and socio-economic impact, little is known about its etiology. Preclinical and clinical studies have demonstrated that depression can lead to cell loss and atrophy in limbic brain structures including hippocampus. An emerging hypothesis suggests that the treatment of depression is likely...

the present paper is devoted to a new critical state based plasticity model able to predict drained and undrained behaviour of granular material. it incorporates a bounding surface plasticity model describing in multilaminate framework to capitalize on advantages of this mathematical framework. most of the models developed using stress/strain invariants are not capable of identifying the parame...