نتایج جستجو برای: cyclic plasticity model

تعداد نتایج: 2237656  

Journal: :Genes, brain, and behavior 2016
D E Ehrlich S A Josselyn

Learning about motivationally important stimuli involves plasticity in the amygdala, a temporal lobe structure. Amygdala-dependent learning involves a growing number of plasticity-related signaling pathways also implicated in brain development, suggesting that learning-related signaling in juveniles may simultaneously influence development. Here, we review the pleiotropic functions in nervous s...

Journal: :Modelling and Simulation in Materials Science and Engineering 2021

Abstract Additively manufactured specimens generally exhibit comparable or improved tensile properties, such as yield stress, ultimate strength, and uniform elongation, compared to conventionally specimens. However, the defects that are typically present in additively microstructures result inferior fatigue performance. A representative volume element-based modeling technique incorporating thes...

Journal: :Continuum Mechanics and Thermodynamics 2021

A common belief in phenomenological strain gradient plasticity modeling is that including the of scalar variables constitutive setting leads to size-dependent isotropic hardening, whereas second-order tensors induces kinematic hardening. The present paper shows it also possible produce hardening using scalar-based theory. For this purpose, a new model involving equivalent plastic developed and ...

Journal: :Biomaterials 2002
J S Bergström S M Kurtz C M Rimnac A A Edidin

When subjected to a monotonically increasing deformation state, the mechanical behavior of UHMWPE is characterized by a linear elastic response followed by distributed yielding and strain hardening at large deformations. During the unloading phases of an applied cyclic deformation process, the response is characterized by nonlinear recovery driven by the release of stored internal energy. A num...

ژورنال: مواد پرانرژی 2016

In this article, low velocity impact behavior of fiber metal laminate (FML) composite plates is investigated under three different impact energies (12.7 J, 16.3 J and 24.2 J). Here, three modeling techniques are used. In one of the models the inter-laminar damage is neglected (model without delamination) and in other two models this damage is simulated using cohesive element and cohesive surfac...

Journal: :Acta Materialia 2021

Hydride formation in Zircaloy-4 under cyclic thermomechanical loading has been investigated using characterized notched beam samples four-point testing, and microstructurally-representative crystal plasticity modelling of the tests which incorporates an atomistically-informed equilibrium-state model for hydrogen concentration. The provided locations within microstructure high content, above tha...

2006
Juan Gomez Cemal Basaran

A thermodynamics-based damage mechanics rate dependent constitutive model is used to simulate experiments conducted on thin layer eutectic Pb/Sn solder joints. As compared to previous implementations of the model here we correct the difficulties introduced by the slow convergency rate of the Owen and Hinton (Owen, D.R.J., Hinton, E., 1980. Finite Element in Plasticity. Pineridge Press Limited, ...

Journal: :Journal of biomechanics 2008
Tamer El Sayed Alejandro Mota Fernando Fraternali Michael Ortiz

In this paper, a fully variational constitutive model of soft biological tissues is formulated in the finite strain regime. The model includes Ogden-type hyperelasticity, finite viscosity, deviatoric and volumetric plasticity, rate and microinertia effects. Variational updates are obtained via time discretization and pre-minimization of a suitable objective function with respect to internal var...

2014
Sufyan Ashhad Daniel Johnston Rishikesh Narayanan

27 The synaptic plasticity literature has focused on establishing necessity and sufficiency as 28 two essential and distinct features in causally relating a signaling molecule to plasticity 29 induction, an approach that has been surprisingly lacking in the intrinsic plasticity 30 literature. Here, we complemented the recently established necessity of inositol 31 trisphosphate (InsP 3) receptor...

Journal: :Journal of neurophysiology 2015
Sufyan Ashhad Daniel Johnston Rishikesh Narayanan

The synaptic plasticity literature has focused on establishing necessity and sufficiency as two essential and distinct features in causally relating a signaling molecule to plasticity induction, an approach that has been surprisingly lacking in the intrinsic plasticity literature. In this study, we complemented the recently established necessity of inositol trisphosphate (InsP3) receptors (InsP...

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