Results 31 to 40 of about 75,387 (288)

Study of the Stress-Strain State of the Surface Layer During the Strengthening Treatment of Parts

open access: yesПроблеми трибології, 2022
The paper presents experimental studies and obtained statistical models of the influence of processing modes on the quality of the surface layer and cyclic durability of reinforced machine parts.
D.D. Marchenko, K.S. Matvyeyeva
doaj   +1 more source

The maternal brain: an organ with peripartal plasticity. [PDF]

open access: yes, 2014
The time of pregnancy, birth, and lactation, is characterized by numerous specific alterations in several systems of the maternal body. Peripartum-associated changes in physiology and behavior, as well as their underlying molecular mechanisms, have been ...
Aigner, Ludwig   +7 more
core   +1 more source

Microstructure Evolution and Mechanical Properties of Austenite Stainless Steel with Gradient Twinned Structure by Surface Mechanical Attrition Treatment

open access: yesNanomaterials, 2021
Gradient structures in engineering materials produce an impressive synergy of strength and plasticity, thereafter, have recently attracted extensive attention in the material families.
Aiying Chen   +4 more
doaj   +1 more source

Extension of a multi-surface plasticity model to two-phase materials

open access: yesInternational Journal of Solids and Structures, 2007
AbstractThe work reported in this paper is part of the ongoing research on the development of suitable elastic–plastic constitutive models for multiphase materials. This paper is concerned with the application of an elastic–plastic constitutive model based on the Mróz-multi-surface kinematic hardening rule to particulate metal matrix composites (PMMCs).
Owolabi, G.M., Singh, M.N.K.
openaire   +1 more source

Line-tension model for plasticity as the Gamma-limit of a nonlinear dislocation energy [PDF]

open access: yes, 2012
In this paper we rigorously derive a line-tension model for plasticity as the Gamma-limit of a nonlinear mesoscopic dislocation energy, without resorting to the introduction of an ad hoc cut-off radius.
Scardia, L.   +4 more
core   +1 more source

Application of the multi-laminate sub-loading surface model in the simulation of a pipe-jacking operation [PDF]

open access: yesNumerical Methods in Civil Engineering, 2014
In this paper a constitutive model formulated in the framework of multi-laminate models is applied to analyze pipe-jacking processes. The multi-laminate -based models consider various integration planes to formulate the stress-strain relationship.
S.A. Ghoreishian Amiri
doaj   +1 more source

Prediction of necking in HCP sheet metals using a two-surface plasticity model

open access: yes, 2019
In the present contribution, a two-surface plasticity model is coupled with several diffuse and localized necking criteria to predict the ductility limits of hexagonal closed packed sheet metals.
ABED-MERAIM, Farid   +5 more
core   +1 more source

Numerical modelling of ductile damage mechanics coupled with an unconventional plasticity model [PDF]

open access: yesFracture and Structural Integrity, 2016
Ductility in metals includes the material’s capability to tolerate plastic deformations before partial or total degradation of its mechanical properties.
R. Fincato, S. Tsutsumi
doaj   +3 more sources

Influence of gaseous hydrogen on plastic strain in vicinity of fatigue crack tip in Armco pure iron

open access: yesMATEC Web of Conferences, 2018
A multi-scale characterisation of the crack tip plasticity has been investigated in a fatigue crack propagation under gaseous hydrogen at gas pressure of 35 MPa in a commercially pure iron, Armco iron. The dislocation structure beneath a fracture surface
Shinko Tomoki   +3 more
doaj   +1 more source

High speed two-photon imaging of calcium dynamics in dendritic spines: consequences for spine calcium kinetics and buffer capacity. [PDF]

open access: yesPLoS ONE, 2007
Rapid calcium concentration changes in postsynaptic structures are crucial for synaptic plasticity. Thus far, the determinants of postsynaptic calcium dynamics have been studied predominantly based on the decay kinetics of calcium transients.
L Niels Cornelisse   +4 more
doaj   +1 more source

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