Results 341 to 350 of about 1,607,713 (385)

On elastic and plastic length scales in strain gradient plasticity

Structural Engineering and Mechanics, 2017
The Fleck-Hutchinson theory on strain gradient plasticity (SGP), proposed in Adv. Appl Mech 33 (1997) 295, has recently been reformulated by adopting the strategy of decomposing the second order strain presented by Lam et al. in J Mech Pays Solids 51 (2003) 1477. The newly built SGP satisfies the non negativity of plastic dissipation, which is still an
J.X. Liu, Wen Wang, Ai Kah Soh, Ziyu Zhao   +3 more
openaire   +2 more sources

On the Decomposition of the Deformation Gradient in Plasticity

Journal of Elasticity, 2017
Starting from the premise that the distances between points are the only measurable quantities, plasticity is placed into the more general context of the continua with a two-scale representation of the deformation. The Kroner-Lee multiplicative decomposition of the deformation gradient comes out to be incompatible with the geometry of such continua ...
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Elastic-Plastic Analysis of Functionally Graded Spherical Pressure Vessels Using Strain Gradient Plasticity

, 2017
In this paper, formulation of elastic-plastic analysis of functionally graded (FG) spherical pressure vessels under internal pressure based on strain gradient plasticity is presented.
H. Shokrollahi
semanticscholar   +1 more source

A Dissipative System Arising in Strain-gradient Plasticity

Applied and Industrial Mathematics in Italy III, 2009
We discuss a nonlocal and fully nonlinear system of partial differential equations which arises in a strain-gradient theory of plasticity proposed by Gurtin (J. Mech. Phys. Solids, 2004). The problem couples an elliptic equation to a parabolic system which exhibits two types of degeneracies: the first one is caused by the nonlinear structure, the ...
GIACOMELLI, Lorenzo, Giuseppe Tomassetti
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The tension-compression behavior of gradient structured materials: A deformation-mechanism-based strain gradient plasticity model

, 2021
Jianfeng Zhao, Xiaochong Lu, Jinling Liu, C. Bao, G. Kang, M. Zaiser, Xu Zhang   +6 more
semanticscholar   +1 more source

Regulation of Chloride Gradients and Neural Plasticity

2019
One of the most remarkable properties of neural circuits is the ability to restructure their synaptic connections throughout life. This synaptic plasticity allows neurons to structurally reorganize and adapt their function in response to experience.
Jimena Perez-Sanchez, Yves De Koninck
openaire   +2 more sources

On the role of moving elastic–plastic boundaries in strain gradient plasticity

Modelling and Simulation in Materials Science and Engineering, 2006
Gradient plasticity theories which are used to describe size effects require nonstandard boundary conditions. We believe that the role of these boundary conditions in combination with a moving elastic–plastic boundary has so far not been well understood. In order to clarify the conditions which are required at such an internal boundary, semi-analytical
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On dissipative gradient effect in higher-order strain gradient plasticity: the modelling of surface passivation

Acta Mechanica Sinica, 2020
Fenfei Hua, Dabiao Liu
semanticscholar   +1 more source

A modified Johnson-Cook material model with strain gradient plasticity consideration for numerical simulation of cold spray process

, 2020
R. Chakrabarty, Jun Song
semanticscholar   +1 more source

Strain gradient plasticity: Theory and experiment

, 1994
N. Fleck, G. Muller, M. Ashby, J. Hutchinson   +3 more
semanticscholar   +1 more source